What communist military junta came to power in Ethiopia following the ousting of Haile Selassie I on 12 September 1974 and although officially coming to an end on 22 February 1987, was not formally abolished until September?
Mengistu Haile Mariam Mengistu Haile Mariam Mengistu Haile Mariam (, pronounced ; born 21 May 1937) is an Ethiopian politician who was the leader of Ethiopia from 1977 to 1991. He was the chairman of the Derg, the military junta that governed Ethiopia, from 1977 to 1987, and the President of the People's Democratic Republic of Ethiopia from 1987 to 1991. The Derg took power in the Ethiopian Revolution following the overthrow of Emperor Haile Selassie I in 1974, marking the end of the Solomonic dynasty which had ruled Ethiopia since the 13th century. Mengistu purged rivals for power from the Derg and
Modernization under Haile Selassie I against Ethiopia, have Ethiopia indicted in the League of Nations, and create a "casus belli" for the invasion, genocide, and attempted recolonization of Ethiopia with Italians. The institution of slavery was again abolished by order of the Italian occupying forces. On 26 August 1942, during the Second Modernization, Haile Selassie issued a proclamation completely outlawing all slavery. Following the Second World War, Haile Selassie opened Ethiopia's first university. The University College of Addis Ababa was founded in 1950. In 1962, it was renamed Haile Selassie I University but is currently known as Addis Ababa University. In 1955, the 1931 Constitution