22 May 1990 (Republic of Yemen was established with the merger of the Yemen Arab Republic [Yemen (Sanaa) or North Yemen] and the Marxist-dominated People's Democratic Republic of Yemen [Yemen (Aden) or South Yemen]); note - previously North Yemen became independent in November 1918 (from the Ottoman Empire) and became a republic with the overthrow of the theocratic Imamate in 1962; South Yemen became independent on 30 November 1967 (from the UK)
14 May 1811 (from Spain)
Religions
Muslim including Shaf'i (Sunni) and Zaydi (Shia), small numbers of Jewish, Christian, and Hindu
Roman Catholic 89.6%, Protestant 6.2%, other Christian 1.1%, other or unspecified 1.9%, none 1.1% (2002 census)
Yemeni rials (YER) per US dollar - 199.76 (2008 est.), 199.14 (2007), 197.18 (2006), 192.67 (2005), 184.78 (2004)
guarani (PYG) per US dollar - 4,337.7 (2008 est.), 5,031 (2007), 5,672.8 (2006), 6,178 (2005), 5,974.6 (2004)
Military Budget as percentage of GDP
6.600%
1.500%
Beijing Olympics Medal Count
Location
Middle East, bordering the Arabian Sea, Gulf of Aden, and Red Sea, between Oman and Saudi Arabia
Central South America, northeast of Argentina
Area
527,968 km sq
406,752 km sq
Coastline
1,906 km
0 km
Climate
mostly desert; hot and humid along west coast; temperate in western mountains affected by seasonal monsoon; extraordinarily hot, dry, harsh desert in east
subtropical to temperate; substantial rainfall in the eastern portions, becoming semiarid in the far west