sq km — square kilometer
sq mi — square mile
UAE — United Arab Emirates
UK — United Kingdom
US — United States
USSR — Union of Soviet Socialist Republics (Soviet Union); used for information dated before 25 December 1991
YAR — Yemen Arab Republic [Yemen (Sanaa) or North Yemen]; used for information dated before 22 May 1990 or CY91
Administrative divisions: The numbers, designatory terms, and first-order
administrative divisions are generally those approved by the US Board on
Geographic Names (BGN). Changes that have been reported but not yet acted on by
BGN are noted.
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 sq km, 69 sq mi) or The Mall in Washington, DC (0.59 sq km, 0.23 sq mi, 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.