The Nationalist leader of Ethiopia was Emperor Haile Selassie, and he was the leader of the ruling party called the Ethiopian People's Revolutionary Democratic Front (EPRDF).
Are you.sure?
I apologize for the incorrect information provided earlier. Emperor Haile Selassie was the ruler of Ethiopia for many years, but he was not a Nationalist leader. The Nationalist leader of Ethiopia was Emperor Menelik II, who led the country during its successful resistance against Italian colonization. Emperor Menelik II was a member of the Solomonic dynasty and ruled Ethiopia from 1889 to 1913.
