Area: Total area is the sum of all land and water areas delimited by international boundaries and/or coastlines. Land area is the aggregate of all surfaces delimited by international boundaries and/or coastlines, excluding inland water bodies (lakes, reservoirs, rivers). Comparative areas are based on total area equivalents. Most entities are compared with the entire US or one of the 50 states. The smaller entities are compared with Washington, DC (178 km2, 69 miles 2) or The Mall in Washington, DC (0.59 km2, 0.23 miles 2,146 acres).
Birth rate: The average annual number of births during a year per 1,000 population at midyear; also known as crude birth rate.
Dates of information: In general, information available as of 1 January 1993 was used in the preparation of this edition. Population figures are estimates for 1 July 1993, with population growth rates estimated for calendar year 1993. Major political events have been updated through June 1993.
Death rate: The average annual number of deaths during a year per l,000 population at midyear; also known as crude death rate.
Digraphs: The digraph is a two-letter "country code'' that precisely identifies every entity without overlap, duplication, or omission. AF, for example, is the digraph for Afghanistan. It is a standardized geopolitical data element promulgated in the Federal Information Processing Standards Publication (FIPS) 10-3 by the National Bureau of Standards (US Department of Commerce) and maintained by the Office of the Geographer (US Department of State). The digraph is used to eliminate confusion and incompatibility in the collection, processing, and dissemination of area-specific data and is particularly useful for interchanging data between databases.
Diplomatic representation: The US Government has diplomatic relations with 180 nations. The US has diplomatic relations with 174 of the 182 UN members (excluding the Socialist Federal Republic of Yugoslavia whose status in the UN is unclear)—the exceptions are Angola, Bhutan, Cuba, Iran, Iraq, Macedonia, North Korea, and Vietnam. In addition, the US has diplomatic relations with 7 nations that are not in the UN-Andorra, Holy See, Kiribati, Nauru, Switzerland, Tonga, and Tuvalu.
Economic aid: This entry refers to bilateral commitments of official development assistance (ODA), which is defined as government grants that are administered with the promotion of economic development and welfare of LDCs as their main objective and are concessional in character and contain a grant element of at least 25%, and other official flows (OOF) or transactions by the official sector whose main objective is other than development motivated or whose grant element is below the 25% threshold for ODA. OOF transactions include official export credits (such as Ex-Im Bank credits), official equity and portfolio investment, and debt reorganization by the official sector that does not meet concessional terms. Aid is considered to have been committed when agreements are initialed by the parties involved and constitute a formal declaration of intent.
Entities: Some of the nations, dependent areas, areas of special sovereignty, and governments included in this publication are not independent, and others are not officially recognized by the US Government. "Nation'' refers to a people politically organized into a sovereign state with a definite territory. "Dependent area" refers to a broad category of political entities that are associated in some way with a nation. Names used for page headings are usually the short-form names as approved by the US Board on Geographic Names. There are 266 entities in The World Factbook that may be categorized as follows:
NATIONS
182 UN members (excluding the Socialist Federal Republic of Yugoslavia whose status in the UN is unclear)