For 10 points, name this nation once ruled by Haile Selassie, which fought against Eritrea and has a capital at Addis Adaba.
This nation was defeated at Maychew following the failure of the Christmas Offensive. This nation was liberated with the aid of a force led by Lord Wingate, and suffered greatly during the Wollo Famine. Mengistu Mariam unleashed the "Red Terror" campaign in this country once it was taken over by the Dergue. This nation had previously expelled a force led by Oreste Baratieri at the battle of Adowa, staving off Italian colonization. It was ruled by king Menelik II, and a king who was succeeded by a Soviet-backed junta. For 10 points, name this nation once ruled by Haile Selassie, which fought against Eritrea and has a capital at Addis Adaba.
This nation was defeated at Maychew following the failure of the Christmas Offensive.
Federal Democratic Republic of {Ethiopia}