Italian troops occupy Addis Ababa, Ethiopia.

Italy formally annexes Ethiopia after taking the capital Addis Ababa on May 5.

During a public ceremony at the Viceregal Palace (the former Imperial residence) in Addis Ababa, Ethiopia, two Eritrean nationalists attempt to kill viceroy Rodolfo Graziani with a number of grenades.

In Addis Ababa, Ethiopia, the Organisation of African Unity is established.

The capital city of Addis Ababa, falls to the Ethiopian People's Revolutionary Democratic Front, ending both the Derg regime in Ethiopia and the Ethiopian Civil War.

The African Union is established in Addis Ababa, Ethiopia. Its first chairman is Thabo Mbeki, President of South Africa.