Ethiopia

Ethiopia, country on the Horn of Africa. The country lies completely within the tropical latitudes and is relatively compact, with similar north-south and east-west dimensions. The capital is Addis Ababa (“New Flower”), located almost at the centre of the country. Ethiopia is the largest and most populated country in the Horn of Africa. With the 1993 secession of Eritrea, its former province along the Red Sea, Ethiopia became landlocked.

Ethiopia is one of the world’s oldest countries, its territorial extent having varied over the millennia of its existence. In ancient times it remained centred on Aksum, an imperial capital located in the northern part of the modern state, about 100 miles (160 km) from the Red Sea coast. The present territory was consolidated during the 19th and 20th centuries as European powers encroached into Ethiopia’s historical domain. Ethiopia became prominent in modern world affairs first in 1896, when it defeated colonial Italy in the Battle of Adwa, and again in 1935–36, when it was invaded and occupied by fascist Italy. Liberation during World War II by the Allied powers set the stage for Ethiopia to play a more prominent role in world affairs. Ethiopia was among the first independent nations to sign the Charter of the United Nations, and it gave moral and material support to the decolonization of Africa and to the growth of Pan-African cooperation. These efforts culminated in the establishment of the Organization of African Unity (since 2002, the African Union) and the United Nations Economic Commission for Africa, both of which have their headquarters in Addis Ababa.

Ethiopia’s topography, one of the most rugged in Africa, is built on four geologic formations. Rocks of Precambrian origin (more than 540 million years in age) form the oldest basal complex of Ethiopia, as they do in most of Africa. The Precambrian layer is buried under more recent geologic formations—except in parts of northern, western, and southern Ethiopia, where there are exposed rock layers of granite and schist. Geologic processes of the Mesozoic Era (about 250 to 65 million years ago) contributed sedimentary layers of limestone and sandstone, most of which have been either eroded or covered by volcanic rocks. Younger sedimentary layers are found in northern Ethiopia and on the floors of the Rift Valley. Lava flows from the Cenozoic Era (i.e., the past 65 million years) have formed basaltic layers that now cover two-thirds of Ethiopia’s land surface with a thickness ranging from about 1,000 feet (300 metres) to almost 10,000 feet (3,000 metres). The Rift Valley forms a spectacular graben (a massive tectonic trough) running right down the middle of the country from the northern frontier with Eritrea to the southern border with Kenya. Although Ethiopia’s complex relief defies easy classification, five topographic features are discernible. These are the Western Highlands, the Western Lowlands, the Eastern Highlands, the Eastern Lowlands, and the Rift Valley. The Western Highlands are the most extensive and rugged topographic component of Ethiopia. The most spectacular portion is the North Central massifs; these form the roof of Ethiopia, with elevations ranging from 14,872 feet (4,533 metres) for Mount Ras Dejen (or Dashen), the highest point in Ethiopia, to the Blue Nile and Tekeze river channels 10,000 feet below. Lake Tana—Ethiopia’s largest inland lake and the main reservoir for the Blue Nile River—is located in this region, at an elevation of about 6,000 feet (1,800 metres).

Witten by Donald Edward Crummey