Religions
This entry is an ordered listing of religions by adherents starting with the largest group and sometimes includes the percent of total population. The core characteristics and beliefs of the world's major religions are described below. Baha'i - Founded by Mirza Husayn-Ali (known as Baha'u'llah) in Iran in 1852, Baha'i faith emphasizes monotheism and believes in one eternal transcendent God. Its guiding focus is to encourage the unity of all peoples on the earth so that justice and peace may be achieved on earth. Baha'i revelation contends the prophets of major world religions reflect some truth or element of the divine, believes all were manifestations of God given to specific communities in specific times, and that Baha'u'llah is an additional prophet meant to call all humankind. Bahais are an open community, located worldwide, with the greatest concentration of believers in South Asia. Buddhism - Religion or philosophy inspired by the 5th century B.C. teachings of Siddhartha Gautama (also known as Gautama Buddha "the enlightened one"). Buddhism focuses on the goal of spiritual enlightenment centered on an understanding of Gautama Buddha's Four Noble Truths on the nature of suffering, and on the Eightfold Path of spiritual and moral practice, to break the cycle of suffering of which we are a part. Buddhism ascribes to a karmic system of rebirth. Several schools and sects of Buddhism exist, differing often on the nature of the Buddha, the extent to which enlightenment can be achieved - for one or for all, and by whom - religious orders or laity. Basic Groupings Theravada Buddhism: The oldest Buddhist school, Theravada is practiced mostly in Sri Lanka, Cambodia, Laos, Burma, and Thailand, with minority representation elsewhere in Asia and the West. Theravadans follow the Pali Canon of Buddha's teachings, and believe that one may escape the cycle of rebirth, worldly attachment, and suffering for oneself; this process may take one or several lifetimes. Mahayana Buddhism, including subsets Zen and Tibetan Buddhism: Forms of Mahayana Buddhism are common in East Asia and Tibet, and parts of the West. Mahayanas have additional scriptures beyond the Pali Canon and believe the Buddha is eternal and still teaching. Unlike Theravada Buddhism, Mahayana schools maintain the Buddha-nature is present in all beings and all will ultimately achieve enlightenment. Christianity - Descending from Judaism, Christianity's central belief maintains Jesus of Nazareth is the promised messiah of the Hebrew Scriptures, and that his life, death, and resurrection are salvific for the world. Christianity is one of the three monotheistic Abrahamic faiths, along with Islam and Judaism, which traces its spiritual lineage to Abraham of the Hebrew Scriptures. Its sacred texts include the Hebrew Bible and the New Testament (or the Christian Gospels). Basic Groupings Catholicism (or Roman Catholicism): This is the oldest established western Christian church and the world's largest single religious body. It is supranational, and recognizes a hierarchical structure with the Pope, or Bishop of Rome, as its head, located at the Vatican. Catholics believe the Pope is the divinely ordered head of the Church from a direct spiritual legacy of Jesus' apostle Peter. Catholicism is comprised of 23 particular Churches, or Rites - one Western (Latin-Rite) and 22 Eastern. The Latin Rite is by far the largest, making up about 98% of Catholic membership. Eastern-Rite Churches, such as the Maronite Church and the Ukrainian Catholic Church, are in communion with Rome although they preserve their own worship traditions and their immediate hierarchy consists of clergy within their own rite. The Catholic Church has a comprehensive theological and moral doctrine specified for believers in its catechism, which makes it unique among most forms of Christianity. Mormonism (including the Church of Jesus Christ of Latter-Day Saints): Originating in 1830 in the United States under Joseph Smith, Mormonism is not characterized as a form of Protestant Christianity because it claims additional revealed Christian scriptures after the Hebrew Bible and New Testament. The Book of Mormon maintains there was an appearance of Jesus in the New World following the Christian account of his resurrection, and that the Americas are uniquely blessed continents. Mormonism believes earlier Christian traditions, such as the Roman Catholic, Orthodox, and Protestant reform faiths, are apostasies and that Joseph Smith's revelation of the Book of Mormon is a restoration of true Christianity. Mormons have a hierarchical religious leadership structure, and actively proselytize their faith; they are located primarily in the Americas and in a number of other Western countries. Orthodox Christianity: The oldest established eastern form of Christianity, the Holy Orthodox Church, has a ceremonial head in the Bishop of Constantinople (Istanbul), also known as a Patriarch, but its various regional forms (e.g., Greek Orthodox, Russian Orthodox, Serbian Orthodox, Ukrainian Orthodox) are autocephalous (independent of Constantinople's authority, and have their own Patriarchs). Orthodox churches are highly nationalist and ethnic. The Orthodox Christian faith shares many theological tenets with the Roman Catholic Church, but diverges on some key premises and does not recognize the governing authority of the Pope. Protestant Christianity: Protestant Christianity originated in the 16th century as an attempt to reform Roman Catholicism's practices, dogma, and theology. It encompasses several forms or denominations which are extremely varied in structure, beliefs, relationship to state, clergy, and governance. Many protestant theologies emphasize the primary role of scripture in their faith, advocating individual interpretation of Christian texts without the mediation of a final religious authority such as the Roman Pope. The oldest Protestant Christianities include Lutheranism, Calvinism (Presbyterians), and Anglican Christianity (Episcopalians), which have established liturgies, governing structure, and formal clergy. Other variants on Protestant Christianity, including Pentecostal movements and independent churches, may lack one or more of these elements, and their leadership and beliefs are individualized and dynamic. Hinduism - Originating in the Vedic civilization of India (second and first millennium B.C.), Hinduism is an extremely diverse set of beliefs and practices with no single founder or religious authority. Hinduism has many scriptures; the Vedas, the Upanishads, and the Bhagavad-Gita are among some of the most important. Hindus may worship one or many deities, usually with prayer rituals within their own home. The most common figures of devotion are the gods Vishnu, Shiva, and a mother goddess, Devi. Most Hindus believe the soul, or atman, is eternal, and goes through a cycle of birth, death, and rebirth (samsara) determined by one's positive or negative karma, or the consequences of one's actions. The goal of religious life is to learn to act so as to finally achieve liberation (moksha) of one's soul, escaping the rebirth cycle. Islam - The third of the monotheistic Abrahamic faiths, Islam originated with the teachings of Muhammad in the 7th century. Muslims believe Muhammad is the final of all religious prophets (beginning with Abraham) and that the Qu'ran, which is the Islamic scripture, was revealed to him by God. Islam derives from the word submission, and obedience to God is a primary theme in this religion. In order to live an Islamic life, believers must follow the five pillars, or tenets, of Islam, which are the testimony of faith (shahada), daily prayer (salah), giving alms (zakah), fasting during Ramadan (sawm), and the pilgrimage to Mecca (hajj). Basic Groupings The two primary branches of Islam are Sunni and Shia, which split from each other over a religio-political leadership dispute about the rightful successor to Muhammad. The Shia believe Muhammad's cousin and son-in-law, Ali, was the only divinely ordained Imam (religious leader), while the Sunni maintain the first three caliphs after Muhammad were also legitimate authorities. In modern Islam, Sunnis and Shia continue to have different views of acceptable schools of Islamic jurisprudence, and who is a proper Islamic religious authority. Islam also has an active mystical branch, Sufism, with various Sunni and Shia subsets. Sunni Islam accounts for over 75% of the world's Muslim population. It recognizes the Abu Bakr as the first caliph after Muhammad. Sunni has four schools of Islamic doctrine and law - Hanafi, Maliki, Shafi'i, and Hanbali - which uniquely interpret the Hadith, or recorded oral traditions of Muhammad. A Sunni Muslim may elect to follow any one of these schools, as all are considered equally valid. Shia Islam represents 10-20% of Muslims worldwide, and its distinguishing feature is its reverence for Ali as an infallible, divinely inspired leader, and as the first Imam of the Muslim community after Muhammad. A majority of Shia are known as "Twelvers," because they believe that the 11 familial successor imams after Muhammad culminate in a 12th Imam (al-Mahdi) who is hidden in the world and will reappear at its end to redeem the righteous. Variants Ismaili faith: A sect of Shia Islam, its adherents are also known as "Seveners," because they believe that the rightful seventh Imam in Islamic leadership was Isma'il, the elder son of Imam Jafar al-Sadiq. Ismaili tradition awaits the return of the seventh Imam as the Mahdi, or Islamic messianic figure. Ismailis are located in various parts of the world, particularly South Asia and the Levant. Alawi faith: Another Shia sect of Islam, the name reflects followers' devotion to the religious authority of Ali. Alawites are a closed, secretive religious group who assert they are Shia Muslims, although outside scholars speculate their beliefs may have a syncretic mix with other faiths originating in the Middle East. Alawis live mostly in Syria, Lebanon, and Turkey. Druze faith: A highly secretive tradition and a closed community that derives from the Ismaili sect of Islam; its core beliefs are thought to emphasize a combination of Gnostic principles believing that the Fatimid caliph, al-Hakin, is the one who embodies the key aspects of goodness of the universe, which are, the intellect, the word, the soul, the preceder, and the follower. The Druze have a key presence in Syria, Lebanon, and Israel. Jainism - Originating in India, Jain spiritual philosophy believes in an eternal human soul, the eternal universe, and a principle of "the own nature of things." It emphasizes compassion for all living things, seeks liberation of the human soul from reincarnation through enlightenment, and values personal responsibility due to the belief in the immediate consequences of one's behavior. Jain philosophy teaches non-violence and prescribes vegetarianism for monks and laity alike; its adherents are a highly influential religious minority in Indian society. Judaism - One of the first known monotheistic religions, likely dating to between 2000-1500 B.C., Judaism is the native faith of the Jewish people, based upon the belief in a covenant of responsibility between a sole omnipotent creator God and Abraham, the patriarch of Judaism's Hebrew Bible, or Tanakh. Divine revelation of principles and prohibitions in the Hebrew Scriptures form the basis of Jewish law, or halakhah, which is a key component of the faith. While there are extensive traditions of Jewish halakhic and theological discourse, there is no final dogmatic authority in the tradition. Local communities have their own religious leadership. Modern Judaism has three basic categories of faith: Orthodox, Conservative, and Reform/Liberal. These differ in their views and observance of Jewish law, with the Orthodox representing the most traditional practice, and Reform/Liberal communities the most accommodating of individualized interpretations of Jewish identity and faith. Shintoism - A native animist tradition of Japan, Shinto practice is based upon the premise that every being and object has its own spirit or kami. Shinto practitioners worship several particular kamis, including the kamis of nature, and families often have shrines to their ancestors' kamis. Shintoism has no fixed tradition of prayers or prescribed dogma, but is characterized by individual ritual. Respect for the kamis in nature is a key Shinto value. Prior to the end of World War II, Shinto was the state religion of Japan, and bolstered the cult of the Japanese emperor. Sikhism - Founded by the Guru Nanak (born 1469), Sikhism believes in a non-anthropomorphic, supreme, eternal, creator God; centering one's devotion to God is seen as a means of escaping the cycle of rebirth. Sikhs follow the teachings of Nanak and nine subsequent gurus. Their scripture, the Guru Granth Sahib - also known as the Adi Granth - is considered the living Guru, or final authority of Sikh faith and theology. Sikhism emphasizes equality of humankind and disavows caste, class, or gender discrimination. Taoism - Chinese philosophy or religion based upon Lao Tzu's Tao Te Ching, which centers on belief in the Tao, or the way, as the flow of the universe and the nature of things. Taoism encourages a principle of non-force, or wu-wei, as the means to live harmoniously with the Tao. Taoists believe the esoteric world is made up of a perfect harmonious balance and nature, while in the manifest world - particularly in the body - balance is distorted. The Three Jewels of the Tao - compassion, simplicity, and humility - serve as the basis for Taoist ethics. Zoroastrianism - Originating from the teachings of Zoroaster in about the 9th or 10th century B.C., Zoroastrianism may be the oldest continuing creedal religion. Its key beliefs center on a transcendent creator God, Ahura Mazda, and the concept of free will. The key ethical tenets of Zoroastrianism expressed in its scripture, the Avesta, are based on a dualistic worldview where one may prevent chaos if one chooses to serve God and exercises good thoughts, good words, and good deeds. Zoroastrianism is generally a closed religion and members are almost always born to Zoroastrian parents. Prior to the spread of Islam, Zoroastrianism dominated greater Iran. Today, though a minority, Zoroastrians remain primarily in Iran, India, and Pakistan.
Reserves of foreign exchange and gold
This entry gives the dollar value for the stock of all financial assets that are available to the central monetary authority for use in meeting a country's balance of payments needs as of the end-date of the period specified. This category includes not only foreign currency and gold, but also a country's holdings of Special Drawing Rights in the International Monetary Fund, and its reserve position in the Fund.
Roadways
This entry gives the total length of the road network and includes the length of the paved and unpaved portions.
School life expectancy (primary to tertiary education)
School life expectancy (SLE) is the total number of years of schooling (primary to tertiary) that a child can expect to receive, assuming that the probability of his or her being enrolled in school at any particular future age is equal to the current enrollment ratio at that age. Caution must be maintained when utilizing this indicator in international comparisons. For example, a year or grade completed in one country is not necessarily the same in terms of educational content or quality as a year or grade completed in another country. SLE represents the expected number of years of schooling that will be completed, including years spent repeating one or more grades.
Sex ratio
This entry includes the number of males for each female in five age groups - at birth, under 15 years, 15-64 years, 65 years and over, and for the total population. Sex ratio at birth has recently emerged as an indicator of certain kinds of sex discrimination in some countries. For instance, high sex ratios at birth in some Asian countries are now attributed to sex-selective abortion and infanticide due to a strong preference for sons. This will affect future marriage patterns and fertility patterns. Eventually, it could cause unrest among young adult males who are unable to find partners.
Stock of direct foreign investment - abroad
This entry gives the cumulative US dollar value of all investments in foreign countries made directly by residents - primarily companies - of the home country, as of the end of the time period indicated. Direct investment excludes investment through purchase of shares.
Stock of direct foreign investment - at home
This entry gives the cumulative US dollar value of all investments in the home country made directly by residents - primarily companies - of other countries as of the end of the time period indicated. Direct investment excludes investment through purchase of shares.
Stock of domestic credit
This entry is the total quantity of credit, denominated in the domestic currency, provided by banks to nonbanking institutions. The national currency units have been converted to US dollars at the closing exchange rate on the date of the information.
Stock of money
This entry, also known as "M1," comprises the total quantity of currency in circulation (notes and coins) plus demand deposits denominated in the national currency, held by nonbank financial institutions, state and local governments, nonfinancial public enterprises, and the private sector of the economy. The national currency units have been converted to US dollars at the closing exchange rate on the date of the information.
Stock of quasi money
This entry comprises the total quantity of time and savings deposits denominated in the national currency, held by nonbank financial institutions, state and local governments, nonfinancial public enterprises, and the private sector of the economy. When added together with "M1" the total money supply is known as "M2." The national currency units have been converted to US dollars at the closing exchange rate on the date of the information.
Suffrage
This entry gives the age at enfranchisement and whether the right to vote is universal or restricted.
Telephone numbers
All telephone numbers in The World Factbook consist of the country code in brackets, the city or area code (where required) in parentheses, and the local number. The one component that is not presented is the international access code, which varies from country to country. For example, an international direct dial telephone call placed from the US to Madrid, Spain, would be as follows: 011 [34] (1) 577-xxxx, where 011 is the international access code for station-to-station calls; 01 is for calls other than station-to-station calls, [34] is the country code for Spain, (1) is the city code for Madrid, 577 is the local exchange, and xxxx is the local telephone number. An international direct dial telephone call placed from another country to the US would be as follows: international access code + [1] (202) 939-xxxx, where [ 1] is the country code for the US, (202) is the area code for Washington, DC, 939 is the local exchange, and xxxx is the local telephone number.
Telephone system
This entry includes a brief general assessment of the system with details on the domestic and international components. The following terms and abbreviations are used throughout the entry: Arabsat - Arab Satellite Communications Organization (Riyadh, Saudi Arabia). Autodin - Automatic Digital Network (US Department of Defense). CB - citizen's band mobile radio communications. Cellular telephone system - the telephones in this system are radio transceivers, with each instrument having its own private radio frequency and sufficient radiated power to reach the booster station in its area (cell), from which the telephone signal is fed to a telephone exchange. Central American Microwave System - a trunk microwave radio relay system that links the countries of Central America and Mexico with each other. Coaxial cable - a multichannel communication cable consisting of a central conducting wire, surrounded by and insulated from a cylindrical conducting shell; a large number of telephone channels can be made available within the insulated space by the use of a large number of carrier frequencies. Comsat - Communications Satellite Corporation (US). DSN - Defense Switched Network (formerly Automatic Voice Network or Autovon); basic general-purpose, switched voice network of the Defense Communications System (US Department of Defense). Eutelsat - European Telecommunications Satellite Organization (Paris). Fiber-optic cable - a multichannel communications cable using a thread of optical glass fibers as a transmission medium in which the signal (voice, video, etc.) is in the form of a coded pulse of light. GSM - a global system for mobile (cellular) communications devised by the Groupe Special Mobile of the pan-European standardization organization, Conference Europeanne des Posts et Telecommunications (CEPT) in 1982. HF - high frequency; any radio frequency in the 3,000- to 30,000-kHz range. Inmarsat - International Maritime Satellite Organization (London); provider of global mobile satellite communications for commercial, distress, and safety applications at sea, in the air, and on land. Intelsat - International Telecommunications Satellite Organization (Washington, DC). Intersputnik - International Organization of Space Communications (Moscow); first established in the former Soviet Union and the East European countries, it is now marketing its services worldwide with earth stations in North America, Africa, and East Asia. Landline - communication wire or cable of any sort that is installed on poles or buried in the ground. Marecs - Maritime European Communications Satellite used in the Inmarsat system on lease from the European Space Agency. Marisat - satellites of the Comsat Corporation that participate in the Inmarsat system. Medarabtel - the Middle East Telecommunications Project of the International Telecommunications Union (ITU) providing a modern telecommunications network, primarily by microwave radio relay, linking Algeria, Djibouti, Egypt, Jordan, Libya, Morocco, Saudi Arabia, Somalia, Sudan, Syria, Tunisia, and Yemen; it was initially started in Morocco in 1970 by the Arab Telecommunications Union (ATU) and was known at that time as the Middle East Mediterranean Telecommunications Network. Microwave radio relay - transmission of long distance telephone calls and television programs by highly directional radio microwaves that are received and sent on from one booster station to another on an optical path. NMT - Nordic Mobile Telephone; an analog cellular telephone system that was developed jointly by the national telecommunications authorities of the Nordic countries (Denmark, Finland, Iceland, Norway, and Sweden). Orbita - a Russian television service; also the trade name of a packet-switched digital telephone network. Radiotelephone communications - the two-way transmission and reception of sounds by broadcast radio on authorized frequencies using telephone handsets. PanAmSat - PanAmSat Corporation (Greenwich, CT). SAFE - South African Far East Cable Satellite communication system - a communication system consisting of two or more earth stations and at least one satellite that provide long distance transmission of voice, data, and television; the system usually serves as a trunk connection between telephone exchanges; if the earth stations are in the same country, it is a domestic system. Satellite earth station - a communications facility with a microwave radio transmitting and receiving antenna and required receiving and transmitting equipment for communicating with satellites. Satellite link - a radio connection between a satellite and an earth station permitting communication between them, either one-way (down link from satellite to earth station - television receive-only transmission) or two-way (telephone channels). SHF - super high frequency; any radio frequency in the 3,000- to 30,000-MHz range. Shortwave - radio frequencies (from 1.605 to 30 MHz) that fall above the commercial broadcast band and are used for communication over long distances. Solidaridad - geosynchronous satellites in Mexico's system of international telecommunications in the Western Hemisphere. Statsionar - Russia's geostationary system for satellite telecommunications. Submarine cable - a cable designed for service under water. TAT - Trans-Atlantic Telephone; any of a number of high-capacity submarine coaxial telephone cables linking Europe with North America. Telefax - facsimile service between subscriber stations via the public switched telephone network or the international Datel network. Telegraph - a telecommunications system designed for unmodulated electric impulse transmission. Telex - a communication service involving teletypewriters connected by wire through automatic exchanges. Tropospheric scatter - a form of microwave radio transmission in which the troposphere is used to scatter and reflect a fraction of the incident radio waves back to earth; powerful, highly directional antennas are used to transmit and receive the microwave signals; reliable over-the-horizon communications are realized for distances up to 600 miles in a single hop; additional hops can extend the range of this system for very long distances. Trunk network - a network of switching centers, connected by multichannel trunk lines. UHF - ultra high frequency; any radio frequency in the 300- to 3,000-MHz range. VHF - very high frequency; any radio frequency in the 30- to 300-MHz range.
Telephones - main lines in use
This entry gives the total number of main telephone lines in use.
Telephones - mobile cellular
This entry gives the total number of mobile cellular telephone subscribers.
Television broadcast stations
This entry gives the total number of separate broadcast stations plus any repeater stations.
Terminology
Due to the highly structured nature of the Factbook database, some collective generic terms have to be used. For example, the word Country in the Country name entry refers to a wide variety of dependencies, areas of special sovereignty, uninhabited islands, and other entities in addition to the traditional countries or independent states. Military is also used as an umbrella term for various civil defense, security, and defense activities in many entries. The Independence entry includes the usual colonial independence dates and former ruling states as well as other significant nationhood dates such as the traditional founding date or the date of unification, federation, confederation, establishment, or state succession that are not strictly independence dates. Dependent areas have the nature of their dependency status noted in this same entry.
Terrain
This entry contains a brief description of the topography.
Time difference
This entry is expressed in The World Factbook in two ways. First, it is stated as the difference in hours between the capital of an entity and Coordinated Universal Time (UTC) during Standard Time. Additionally, the difference in time between the capital of an entity and that observed in Washington, D.C. is also provided. Note that the time difference assumes both locations are simultaneously observing Standard Time or Daylight Saving Time.
Time zones
Ten countries (Australia, Brazil, Canada, Indonesia, Kazakhstan, Mexico, New Zealand, Russia, Spain, and the United States) and the island of Greenland observe more than one official time depending on the number of designated time zones within their boundaries. An illustration of time zones throughout the world and within countries can be seen in the Standard Time Zones of the World map included in the Reference Maps section of The World Factbook.
Total fertility rate
This entry gives a figure for the average number of children that would be born per woman if all women lived to the end of their childbearing years and bore children according to a given fertility rate at each age. The total fertility rate (TFR) is a more direct measure of the level of fertility than the crude birth rate, since it refers to births per woman. This indicator shows the potential for population change in the country. A rate of two children per woman is considered the replacement rate for a population, resulting in relative stability in terms of total numbers. Rates above two children indicate populations growing in size and whose median age is declining. Higher rates may also indicate difficulties for families, in some situations, to feed and educate their children and for women to enter the labor force. Rates below two children indicate populations decreasing in size and growing older. Global fertility rates are in general decline and this trend is most pronounced in industrialized countries, especially Western Europe, where populations are projected to decline dramatically over the next 50 years.
Total renewable water resources
This entry provides the long-term average water availability for a country in cubic kilometers of precipitation, recharged ground water, and surface inflows from surrounding countries. The values have been adjusted to account for overlap resulting from surface flow recharge of groundwater sources. Total renewable water resources provides the water total available to a country but does not include water resource totals that have been reserved for upstream or downstream countries through international agreements. Note that these values are averages and do not accurately reflect the total available in any given year. Annual available resources can vary greatly due to short-term and long-term climatic and weather variations.
Trafficking in persons
Trafficking in persons is modern-day slavery, involving victims who are forced, defrauded, or coerced into labor or sexual exploitation. The International Labor Organization (ILO), the UN agency charged with addressing labor standards, employment, and social protection issues, estimates that 12.3 million people worldwide are enslaved in forced labor, bonded labor, forced child labor, sexual servitude, and involuntary servitude at any given time. Human trafficking is a multi-dimensional threat, depriving people of their human rights and freedoms, risking global health, promoting social breakdown, inhibiting development by depriving countries of their human capital, and helping fuel the growth of organized crime. In 2000, the US Congress passed the Trafficking Victims Protection Act (TVPA), reauthorized in 2003 and 2005, which provides tools for the US to combat trafficking in persons, both domestically and abroad. One of the law's key components is the creation of the US Department of State's annual Trafficking in Persons Report, which assesses the government response (i.e., the current situation) in some 150 countries with a significant number of victims trafficked across their borders who are recruited, harbored, transported, provided, or obtained for forced labor or sexual exploitation. Countries in the annual report are rated in three tiers, based on government efforts to combat trafficking. The countries identified in this entry are those listed in the 2008 Trafficking in Persons Report as Tier 2 Watch List or Tier 3 based on the following tier rating definitions: Tier 2 Watch List countries do not fully comply with the minimum standards for the elimination of trafficking but are making significant efforts to do so, and meet one of the following criteria: 1. they display high or significantly increasing number of victims, 2. they have failed to provide evidence of increasing efforts to combat trafficking in persons, or, 3. they have committed to take action over the next year. Tier 3 countries neither satisfy the minimum standards for the elimination of trafficking nor demonstrate a significant effort to do so. Countries in this tier are subject to potential non-humanitarian and non-trade sanctions.
Transnational issues
This category includes four entries - Disputes - international, Refugees and internally displaced persons, Trafficking in persons, and Illicit drugs - that deal with current issues going beyond national boundaries.
Transportation
This category includes the entries dealing with the means for movement of people and goods.
Transportation - note
This entry includes miscellaneous transportation information of significance not included elsewhere.
UTC (Coordinated Universal Time)
See entry for Coordinated Universal Time.
Unemployment rate
This entry contains the percent of the labor force that is without jobs. Substantial underemployment might be noted.
Urbanization
This entry provides two measures of the degree of urbanization of a population. The first, urban population, describes the percentage of the total population living in urban areas, as defined by the country. The second, rate of urbanization, describes the projected average rate of change of the size of the urban population over the given period of time. Additionally, the World entry includes a list of the ten largest urban agglomerations. An urban agglomeration is defined as comprising the city or town proper and also the suburban fringe or thickly settled territory lying outside of, but adjacent to, the boundaries of the city.
Waterways
This entry gives the total length of navigable rivers, canals, and other inland bodies of water.
Weights and Measures
This information is presented in This information is presented in
All year references are for the calendar year (CY) unless indicated as fiscal year (FY). The calendar year is an accounting period of 12 months from 1 January to 31 December. The fiscal year is an accounting period of 12 months other than 1 January to 31 December.
Note: Information for the US and US dependencies was complied from material in the public domain and does not represent Intelligence Community estimates.
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CIA - The World Factbook — About :: History
A Brief History of Basic Intelligence and The World Factbook
The Intelligence Cycle is the process by which information is acquired, converted into intelligence, and made available to policymakers. Information is raw data from any source, data that may be fragmentary, contradictory, unreliable, ambiguous, deceptive, or wrong. Intelligence is information that has been collected, integrated, evaluated, analyzed, and interpreted. Finished intelligence is the final product of the Intelligence Cycle ready to be delivered to the policymaker.
The three types of finished intelligence are: basic, current, and estimative. Basic intelligence provides the fundamental and factual reference material on a country or issue. Current intelligence reports on new developments. Estimative intelligence judges probable outcomes. The three are mutually supportive: basic intelligence is the foundation on which the other two are constructed; current intelligence continually updates the inventory of knowledge; and estimative intelligence revises overall interpretations of country and issue prospects for guidance of basic and current intelligence. The World Factbook, The President's Daily Brief, and the National Intelligence Estimates are examples of the three types of finished intelligence.
The United States has carried on foreign intelligence activities since the days of George Washington but only since World War II have they been coordinated on a government-wide basis. Three programs have highlighted the development of coordinated basic intelligence since that time: (1) the Joint Army Navy Intelligence Studies (JANIS), (2) the National Intelligence Survey (NIS), and (3)The World Factbook .
During World War II, intelligence consumers realized that the production of basic intelligence by different components of the US Government resulted in a great duplication of effort and conflicting information. The Japanese attack on Pearl Harbor in 1941 brought home to leaders in Congress and the executive branch the need for integrating departmental reports to national policymakers. Detailed and coordinated information was needed not only on such major powers as Germany and Japan, but also on places of little previous interest. In the Pacific Theater, for example, the Navy and Marines had to launch amphibious operations against many islands about which information was unconfirmed or nonexistent. Intelligence authorities resolved that the United States should never again be caught unprepared.
In 1943, Gen. George B. Strong (G-2), Adm. H. C. Train (Office of Naval Intelligence - ONI), and Gen. William J. Donovan (Director of the Office of Strategic Services - OSS) decided that a joint effort should be initiated. A steering committee was appointed on 27 April 1943 that recommended the formation of a Joint Intelligence Study Publishing Board to assemble, edit, coordinate, and publish the Joint Army Navy Intelligence Studies (JANIS). JANIS was the first interdepartmental basic intelligence program to fulfill the needs of the US Government for an authoritative and coordinated appraisal of strategic basic intelligence. Between April 1943 and July 1947, the board published 34 JANIS studies. JANIS performed well in the war effort, and numerous letters of commendation were received, including a statement from Adm. Forrest Sherman, Chief of Staff, Pacific Ocean Areas, which said, "JANIS has become the indispensable reference work for the shore-based planners."
The need for more comprehensive basic intelligence in the postwar world was well expressed in 1946 by George S. Pettee, a noted author on national security. He wrote in The Future of American Secret Intelligence (Infantry Journal Press, 1946, page 46) that world leadership in peace requires even more elaborate intelligence than in war. "The conduct of peace involves all countries, all human activities - not just the enemy and his war production."
The Central Intelligence Agency was established on 26 July 1947 and officially began operating on 18 September 1947. Effective 1 October 1947, the Director of Central Intelligence assumed operational responsibility for JANIS. On 13 January 1948, the National Security Council issued Intelligence Directive (NSCID) No. 3, which authorized the National Intelligence Survey (NIS) program as a peacetime replacement for the wartime JANIS program. Before adequate NIS country sections could be produced, government agencies had to develop more comprehensive gazetteers and better maps. The US Board on Geographic Names (BGN) compiled the names; the Department of the Interior produced the gazetteers; and CIA produced the maps.
The Hoover Commission's Clark Committee, set up in 1954 to study the structure and administration of the CIA, reported to Congress in 1955 that: "The National Intelligence Survey is an invaluable publication which provides the essential elements of basic intelligence on all areas of the world. There will always be a continuing requirement for keeping the Survey up-to-date." The Factbook was created as an annual summary and update to the encyclopedic NIS studies. The first classified Factbook was published in August 1962, and the first unclassified version was published in June 1971. The NIS program was terminated in 1973 except for the Factbook, map, and gazetteer components. The 1975 Factbook was the first to be made available to the public with sales through the US Government Printing Office (GPO). The Factbook was first made available on the Internet in June 1997. The year 2009 marks the 62nd anniversary of the establishment of the Central Intelligence Agency and the 66th year of continuous basic intelligence support to the US Government by The World Factbook and its two predecessor programs.
The Evolution of The World Factbook
National Basic Intelligence Factbook produced semiannually until 1980. Country entries include sections on Land, Water, People, Government, Economy, Communications, and Defense Forces.
1981
Publication becomes an annual product and is renamed The WorldFactbook. A total of 165 nations are covered on 225 pages.
1983
Appendices (Conversion Factors, International Organizations) first introduced.
1984
Appendices expanded; now include: A. The United Nations, B. SelectedUnited Nations Organizations, C. Selected InternationalOrganizations, D. Country Membership in Selected Organizations, E.Conversion Factors.
1987
A new Geography section replaces the former separate Land and Water sections. UN Organizations and Selected International Organizations appendices merged into a new International Organizations appendix. First multi-color-cover Factbook.
1988
More than 40 new geographic entities added to provide complete world coverage without overlap or omission. Among the new entities are Antarctica, oceans (Arctic, Atlantic, Indian, Pacific), and the World. The front-of-the-book explanatory introduction expanded and retitled to Notes, Definitions, and Abbreviations. Two new Appendices added: Weights and Measures (in place of Conversion Factors) and a Cross-Reference List of Geographic Names. Factbook size reaches 300 pages.
1989
Economy section completely revised and now includes an Overview briefly describing a country's economy. New entries added under People, Government, and Communications.
1990
The Government section revised and considerably expanded with new entries.
1991
A new International Organizations and Groups appendix added.Factbook size reaches 405 pages.
1992
Twenty new successor state entries replace those of the Soviet Union and Yugoslavia. New countries are respectively: Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgyzstan, Latvia, Lithuania, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine, Uzbekistan; and Bosnia and Hercegovina, Croatia, Macedonia, Serbia and Montenegro, Slovenia. Number of nations in the Factbook rises to 188.
1993
Czechoslovakia's split necessitates new Czech Republic and Slovakia entries. New Eritrea entry added after it secedes from Ethiopia. Substantial enhancements made to Geography section.
1994
Two new appendices address Selected International Environmental Agreements. The gross domestic product (GDP) of most developing countries changed to a purchasing power parity (PPP) basis rather than an exchange rate basis. Factbook size up to 512 pages.
1995
The GDP of all countries now presented on a PPP basis. New appendix lists estimates of GDP on an exchange rate basis. Communications category split; Railroads, Highways, Inland waterways, Pipelines, Merchant marine, and Airports entries now make up a new Transportation category. The World Factbook is first produced on CD-ROM.
1996
Maps accompanying each entry now present more detail. Flags also introduced for nearly all entities. Various new entries appear under Geography and Communications. Factbook abbreviations consolidated into a new Appendix A. Two new appendices present a Cross-Reference List of Country Data Codes and a Cross-Reference List of Hydrogeographic Data Codes. Geographic coordinates added to Appendix H, Cross-Reference List of Geographic Names. Factbook size expands by 95 pages in one year to reach 652.
1997
A special edition for the CIA's 50 th anniversary. A schema or Guide to Country Profiles introduced. New color maps and flags now accompany each country profile. Category headings distinguished by shaded backgrounds. Number of categories expanded to nine — the current number — with the addition of an Introduction (for only a few countries) and Transnational Issues (which includes Disputes-international and Illicit drugs). The World Factbook introduced onto the Internet.
1998
The Introduction category with two entries, Current issues and Historical perspective, expanded to more countries. Last year for the production of CD-ROM versions of the Factbook.
1999
Historical perspective and Current issues entries in theIntroduction category combined into a new Background statement.Several new Economy entries introduced. A new physical map of theworld added to the back-of-the-book reference maps.
2000
A new "country profile" added on the Southern Ocean. The Background statements dramatically expanded to over 200 countries and possessions. A number of new Communications entries added.
2001
Background entries completed for all 267 entities in the Factbook. Several new HIV/AIDS entries introduced under the People category. Revision begun on individual country maps to include elevation extremes and a partial geographic grid. Weights and Measures appendix deleted.
2002
New entry on Distribution of Family income — Gini index added. Revision of individual country maps continued (process still ongoing).
2003
In the Economy category, petroleum entries added for oil production, consumption, exports, imports, and proved reserves, as well as natural gas proved reserves.
2004
Additional petroleum entries included for natural gas production, consumption, exports, and imports. In the Transportation category, under Merchant marine, subfields added for foreign-owned vessels and those registered in other countries. Descriptions of the many forms of government mentioned in the Factbook incorporated into the Definitions and Notes.
2005
In the People category, a Major infectious diseases field added for countries deemed to pose a higher risk for travelers. In the Economy category, entries included for Current account balance, Investment, Public debt, and Reserves of foreign exchange and gold. The Transnational issues category expanded to include Refugees and internally displaced persons. Category headings receive distinctive colored backgrounds. These distinguishing colors are used in both the printed and online versions of the Factbook. Size of the printed Factbook reaches 702 pages.
2006
In the Economy category, national GDP figures now presented at Official Exchange Rates (OER) in addition to GDP at purchasing power parity (PPP). Entries in the Transportation section reordered; Highways changed to Roadways, and Ports and harbors to Ports and terminals.
2007
In the Government category, the Capital entry significantly expanded with up to four subfields, including new information having to do with time. The subfields consist of the name of the capital itself, its geographic coordinates, the time difference at the capital from coordinated universal time (UTC), and, if applicable, information on daylight saving time (DST). Where appropriate, a special note is added to highlight those countries with multiple time zones. A Trafficking in persons entry added to the Transnational issues category. A new appendix, Weights and Measures, (re)introduced to the online version of the Factbook.
2008
In the Geography category, two fields focus on the increasingly vital resource of water: Total renewable water resources and Freshwater withdrawal. In the Economy category, three fields added for: Stock of direct foreign investment - at home, Stock of direct foreign investment - abroad, and Market value of publicly traded shares. Concise descriptions of the major religions mentioned in the Factbook included in the Definitions and Notes. Printing of the Factbook turned over to the Government Printing Office.
2009
In the People category, two new fields provide information on education in terms of opportunity and resources: School Life Expectancy and Education expenditures. Additionally, the Urbanization entry expanded to include all countries. In the Economy category, five fields added: Central bank discount rate, Commercial bank prime lending rate, Stock of money, Stock of quasi money, and Stock of domestic credit. The online Factbook site completely redesigned with many new features.
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About :: Copyright and Contributors
The World Factbook is prepared by the Central Intelligence Agency for the use of US Government officials, and the style, format, coverage, and content are designed to meet their specific requirements. Information is provided by Antarctic Information Program (National Science Foundation), Armed Forces Medical Intelligence Center (Department of Defense), Bureau of the Census (Department of Commerce), Bureau of Labor Statistics (Department of Labor), Central Intelligence Agency, Council of Managers of National Antarctic Programs, Defense Intelligence Agency (Department of Defense), Department of Energy, Department of State, Fish and Wildlife Service (Department of the Interior), Maritime Administration (Department of Transportation), National Geospatial-Intelligence Agency (Department of Defense), Naval Facilities Engineering Command (Department of Defense), Office of Insular Affairs (Department of the Interior), Office of Naval Intelligence (Department of Defense), US Board on Geographic Names (Department of the Interior), US Transportation Command (Department of Defense), Oil & Gas Journal, and other public and private sources.
The Factbook is in the public domain. Accordingly, it may be copied freely without permission of the Central Intelligence Agency (CIA). The official seal of the CIA, however, may NOT be copied without permission as required by the CIA Act of 1949 (50 U.S.C. section 403m). Misuse of the official seal of the CIA could result in civil and criminal penalties.
Citation model:
The World Factbook 2009. Washington, DC: Central Intelligence Agency, 2009.
https://www.cia.gov/library/publications/the-world-factbook/index.html
Comments and queries are welcome and may be addressed to:
Central Intelligence AgencyAttn: Office of Public AffairsWashington, DC 20505Hours: Monday-Friday 8:00 AM-4:30 PM Eastern Standard TimeTelephone: [1] (703) 482-0623FAX: [1] (703) 482-1739
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About :: Purchasing
Printed copies of The World Factbook may be obtained from the following:
US Government Printing Office 732 N. Capitol St. Washington, DC 20401 Hours: Monday-Friday 7:00 AM-6:30 PM Eastern Standard Time (EST) Telephone: [1] (202) 512-1800; toll free: [1] (866) 512-1800 FAX: [1] (202) 512-2104 http://bookstore.gpo.gov/
National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Hours: Monday-Friday 8:00 AM-6:00 PM Eastern Standard Time (EST) Telephone: [1] (800) 553-6847 (only in the US); [1] (703) 605-6000 (for outside US) FAX: [1] (703) 605-6900 http://www.ntis.gov/
The World Factbook can be accessed on the Internet at: https://www.cia.gov/library/publications/the-world-factbook/index.html
CIA - The World Factbook — Frequently Asked Questions
Answers to many frequently asked questions (FAQs) are explained in the Definitions and Notes section inThe World Factbook. Please review this section to see if your question is already answered there. In addition, we have compiled the following list of FAQs to answer other common questions.
General ::
Can you provide additional information for a specific country?
The staff cannot provide data beyond what appears in The World Factbook. The format and information in the Factbook are tailored to the specific requirements of US Government officials and content is focused on their current and anticipated needs. The staff welcomes suggestions for new entries.
How often is The World Factbook updated?
Formerly our Web site and the published Factbook were only updated annually. In November 2001, we began more frequent online updates, and we now update the Web site every two weeks. The CIA discontinued publishing the printed Factbook after the 2007 edition; the 2008 and 2009 editions are being published by the US Government Printing Office.
Can I use some or all of The World Factbook for my Web site (book, research project, homework, etc.)?
The World Factbook is in the public domain and may be used freely by anyone at anytime without seeking permission. However, US Code (Section 403m) prohibits use of the CIA seal in a manner which implies that the CIA approved, endorsed, or authorized such use. For any questions about your intended use, you should consult with legal counsel. Further information on use of The World Factbook is described on the Contributors and Copyright Information page. As a courtesy, please cite The World Factbook when used.
Why are there discrepancies between The World Factbook's demographic statistics and other sources?
Although estimates and projections start with the same basic data from censuses, surveys, and registration systems, final estimates and projections can differ as a result of factors including data availability, assessment, and methods and protocols.
Data availability Researchers may obtain specific country data at different times. Estimates or projections developed before the results of a census have been released will not be as accurate as those that take into account new census results.
Assessment Researchers can differ in their assessment of data quality and in their estimates based on the available country data. They often need to adjust their estimates due to such factors as undercounting in a census or underregistration of births or deaths.
Methods and protocols Differences in methods and protocols can shape the way estimates and projections are made of fertility, mortality, and international migration, and how these data are integrated with the population data. For example, the US Census Bureau uses a model that projects the population ahead by single years of age, a single year at a time (population statistics used in the Factbook are based on this model), whereas the United Nations model projects five-year age groups forward, five years at a time.
Why doesn't The World Factbook include information on states, departments, provinces, etc., for each country?
The World Factbook provides national-level information on countries, territories, and dependencies, but not subnational administrative units within a country. A comprehensive encyclopedia might be a source for state/province-level information.
Is it possible to access older editions of The World Factbook to do comparative research and trend analysis?
Previous editions of the Factbook , beginning with 2000, are available for downloading - but not browsing - on the CIA Web site. Rehosted versions of earlier editions of the Factbook are available for browsing, as well as for downloading, at other Internet web sites. We urge caution, however, in attempting to create time series by stringing together economic data - especially dollar values - from previous editions of the Factbook . Over time, data sources, definitions, and economic accounting methods have changed. We occasionally have made these changes ourselves in order to provide our readers with the best information available. Also, in the case of dollar values, changes in relative exchange rates and prices may make trends difficult to comprehend. Therefore, individuals should consult additional resources when doing comparative research or trend analysis.
Would it be possible to set up a partnership or collaboration between the producers of The World Factbook and other organizations or individuals?
The World Factbook does not partner with other organizations or individuals, but we do welcome comments and suggestions that such groups or persons choose to provide.
Geography ::
Why can't I find a geographic name for a particular country?
The World Factbook is not a gazetteer (a dictionary or index of places, usually with descriptive or statistical information) and cannot provide more than the names of the administrative divisions (in the Government category) and major cities/towns (on the country maps). Our expanded Cross-Reference List of Geographic Names, however, includes many of the world's major geographic features as well as historic (former) names of countries and cities mentioned in The World Factbook.
Why are Taiwan and the European Union listed out of alphabetical order at the end of the Factbook entries?
Taiwan is listed after the A-Z country entries because even though the mainland People's Republic of China claims Taiwan, elected Taiwanese authorities de facto administer the island and reject mainland sovereignty claims. With the establishment of diplomatic relations with China on January 1, 1979, the US Government recognized the People's Republic of China as the sole legal government of China, acknowledging the Chinese position that there is only one China and that Taiwan is part of China.
The European Union (EU) is not a country, but it has taken on many nation-like attributes and these may be expanded in the future. A more complete explanation on the inclusion of the EU into the Factbook can be found in the Preliminary statement.
Since we have an ambassador who represents the US at the Vatican, why is this entity not listed in the Factbook?
Vatican City is found under Holy See. The term "Holy See" refers to the authority and sovereignty vested in the Pope and his advisors to direct the worldwide Catholic Church. As the jurisdictional equal of a state, the Holy See can enter into treaties and sends and receives diplomatic representatives. Vatican City, created in 1929 to administer properties belonging to the Holy See in Rome, is recognized under international law as a sovereign state, but it does not send or receive diplomatic representatives. Consequently, Holy See is included as a Factbook entry, with Vatican City cross-referenced in the Geographic Names appendix.
Why is Palestine not listed in The World Factbook?
The Palestinian areas of Gaza Strip and West Bank are listed in theFactbook.
Why are the Golan Heights not shown as part of Israel or NorthernCyprus with Turkey?
Territorial occupations/annexations not recognized by the UnitedStates Government are not shown on US Government maps.
Why don't you include information on entities such as Tibet orKashmir?
The World Factbook provides information on the administrative divisions of a country as recommended by the United States Board on Geographic Names (BGN). The BGN is a component of the US Government that develops policies, principles, and procedures governing the spelling, use, and application of geographic names - domestic, foreign, Antarctic, and undersea. Its decisions enable all departments and agencies of the US Government to have access to uniform names of geographic features.
Also included in the Factbook are entries on parts of the world whose status has not yet been resolved (e.g., West Bank, Spratly Islands). Specific regions within a country or areas in dispute among countries are not covered.
What do you mean when you say that a country is "doubly landlocked"?
A doubly landlocked country is one that is separated from an ocean or an ocean-accessible sea by two intervening countries. Uzbekistan and Liechtenstein are the only countries that fit this definition.
Why is the area of the United States described as "slightly larger than China" in the Factbook , while other sources list China as larger in area than the United States?
It all depends on whether one is looking at total area (land and water) when making the comparison (which is the criterion used by the Factbook) or just land area (which excludes inland water features such as rivers and lakes).
Total area (combining land and water)
United States = 9,826,630 sq kmChina = 9,596,960 sq km
Land only (without any water features)
United States = 9,161,923 sq kmChina = 9,326,410 sq km
Why has The World Factbook dropped the four French departments ofGuadeloupe, Martinique, Reunion, and French Guiana?
The four entities are no longer in The World Factbook because their status has changed. While they are overseas departments of France, they are also now recognized as French regions, having equal status to the 22 metropolitan regions that make up European France. In other words, they are now recognized as being part of France proper. Their status is somewhat analogous to Alaska and Hawaii vis-a-vis the contiguous United States. Although separated from the larger geographic entity, they are still considered to be an integral part of it.
Photos ::
Why do you not have pictures for every country?
Inclusion of photos in The World Factbook is a new feature that premiered with the unveiling of the redesigned online World Factbook in June 2009. This is a long-term project, and we plan to continuously add more photos to the site over time. Eventually, we hope to have images for every country in the Factbook.
Could you include photos of people from different locations around the world?
Factbook policy is to not include photos showing identifiable individuals.
I have great travel photos from my trips abroad. Can I submit them to your web site to enhance your photo collection?
We appreciate the many offers from the public to contribute to our photo collection. However, we only use photos from US Government sources.
Can I use a photo in a report I'm writing?
Yes! All photos in The World Factbook are in the public domain.
Spelling and Pronunciation ::
Why is the spelling of proper names such as rulers, presidents, and prime ministers in The World Factbook different than their spelling in my country?
The Factbook staff applies the names and spellings from the Chiefs of State link on the CIA Web site. The World Factbook is prepared using the standard American English computer keyboard and does not use any special characters, symbols, or most diacritical markings in its spellings. Surnames are always spelled with capital letters; they may appear first in some cultures.
Why does the spelling of geographic names, features, cities, administrative divisions, etc. in the Factbook differ from those used in my country?
The United States Board on Geographic Names (BGN) recommends and approves names and spellings. The BGN is the component of the United States Government that develops policies, principles, and procedures governing the spelling, use, and application of geographic names - domestic, foreign, Antarctic, and undersea. Its decisions enable all departments and agencies of the US Government to use uniform names of geographic features. (A note is usually included where changes may have occurred but have not yet been approved by the BGN). The World Factbook is prepared using the standard American English computer keyboard and does not use any special characters, symbols, or most diacritical markings in its spellings.
Why does The World Factbook omit pronunciations of country or leader names?
There are too many variations in pronunciation among English-speaking countries, not to mention English renditions of non-English names, for pronunciations to be included. American English pronunciations are included for some countries such as Qatar and Kiribati.
Why is the name of the Labour party misspelled?
When American and British spellings of common English words differ, The World Factbook always uses the American spelling, even when these common words form part of a proper name in British English.
Policies and Procedures ::
What is The World Factbook's source for a specific subject field?
The Factbook staff uses many different sources to publish what we judge are the most reliable and consistent data for any particular category. Space considerations preclude a listing of these various sources.
The names of some geographic features provided in the Factbook differ from those used in other publications. For example, in Asia the Factbook has Burma as the country name, but in other publications Myanmar is used; also, the Factbook uses Sea of Japan whereas other publications label it East Sea. What is your policy on naming geographic features?
The Factbook staff follows the guidance of the United States Board on Geographic Names (BGN). The BGN is the component of the United States Government that develops policies, principles, and procedures governing the spelling, use, and application of geographic names - domestic, foreign, Antarctic, and undersea. Its decisions enable all departments and agencies of the US Government to have access to uniform names of geographic features. The position of the BGN is that the names Burma and Sea of Japan be used in official US Government maps and publications.
Why is most of the statistical information in the Factbook given in metric units, rather than the units standard to US measure?
US Federal agencies are required by the Metric Conversion Act of 1975 (Public Law 94-168) and by Executive Order 12770 of July 1991 to use the International System of Units, commonly referred to as the metric system or SI. In addition, the metric system is used by over 95 percent of the world's population.
Why don't you include information on minimum and maximum temperature extremes?
The Factbook staff judges that this information would only be useful for some (generally smaller) countries. Larger countries can have large temperature extremes that do not represent the landmass as a whole.
What information sources are used for the country flags?
Flag designs used in The World Factbook are based on various national and vexillological sources.
Why do your GDP (Gross Domestic Product) statistics differ from other sources?
We have two sets of GDP dollar estimates in The World Factbook , one derived from purchasing power parity (PPP) calculations and the other derived from official exchange rates (OER). Other sources probably use one of the two. See the Definitions and Notes section on GDP and GDP methodology for more information.
On the CIA Web site, Chiefs of State is updated weekly, but the last update for the Factbook was an earlier date. Why the discrepancy?
Although Chiefs of State and The World Factbook both appear on the CIA Web site, they are produced and updated by separate staffs. Chiefs of State includes fewer countries but more leaders, and is updated more frequently than The World Factbook, which has a much larger database, and includes all countries.