The Derg, officially the Provisional Military Administrative Council (PMAC), was the Marxist–Leninist military dictatorship that ruled Ethiopia, then including present-day Eritrea, from 1974 to 1987, when the military leadership or junta formally "civilianized" the administration but stayed in power until 1991.

Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the Northeast, East and Southeast, Kenya to the South, South Sudan to the West, and Sudan to the Northwest. Ethiopia covers a land area of 1,112,000 square kilometres. As of 2023, it is home to around 128 million inhabitants, making it the 13th-most populous country in the world, the 2nd-most populous in Africa after Nigeria, and the most populated landlocked country on Earth. The national capital and largest city, Addis Ababa, lies several kilometres west of the East African Rift that splits the country into the African and Somali tectonic plates.