Ethiopia was one of the earliest world centres of agricultural innovation and archeologists have found the oldest known human ancestors in Ethiopia, including Ardipithecus ramidus kadabba (c. 5.8–5.2 million years old) and Australopithecus anamensis (c. 4.2 million years old). Unlike most African nations, it was never a European colony, and it has been important to the modern history of Africa as a symbol of independence. Its capital, Addis Ababa (or Addis Abeba), is the headquarters of the Organisation of African Unity (OAU) and the United Nations Economic Commission for Africa. The nation's recent history has been marked by the fall of one of the world's last emperors, a socialist revolution, a succession of devastating famines, and civil war between its central government and several of its regions. In 1993, Eritrea, a province of Ethiopia since 1962, seceded after a 30-year war with Ethiopia's central government. Major famines occurred in 1972-74, 1984-85, 1987, and 1989-90, killing perhaps 2 million people. In each case international donors, mainly from the West, provided millions of tons of food aid. |  |