Ethiopia (divided in the administrative provinces of Scioa, Galla-Sidamo, Harar and Amara) was part of the Italian Empire from 1936 to 1941. The Italians constructed huge and expensive infrastructure projects, that drained the Italian economy but reduced in those years the unemployment in the Kingdom of Italy. They did 18,794 km (11,678 mi) of new roads asphaltated: in 1940 Addis Ababa was connected by state-of-the-art roads to Asmara and Mogadishu called Via dell'Impero.
Furthermore, 900 km (559 mi) of railways were reconstructed or initiated/planned (like the railway between Addis Abeba and Assab), dams and hydroelectric plants were built, and many public and private companies were established in the underdeveloped country. The most important were: "Compagnie per il cotone d'Etiopia" (Cotton industry); "Compagnia etiopica del latte e derivati" (Milk industry); "Cementerie d'Etiopia" (Cement industry); "Compagnia etiopica mineraria" (Minerals industry); "Impresse electriche d'Etiopia" (Electricity industry); "Compagnia etiopica degli esplosivi" (Armament industry); "Industria per la birra dell'AOI" (Beer industry); "Trasporti automobilistici (Citao)" (Mechanic & Transport industry).
There was an urban project for the enlargement of Addis Ababa, but these architectural plans -like all the other developments- were stopped by World War II.....
After World War II the Italian Ethiopians were given a full pardon by the newly returned Emperor Haile Salassie, as he saw the opportunity to continue the modernization efforts of the country, namely in the capital of Addis Ababa. He declared that no reprisals would be taken against the Italians, and many remained for decades, until the overthrow of the Emperor by the Dergue. It was under the Communist-led government of Menghistu where the Italians were forced to return to Italy in 1974. Nearly 22,000 Italo-Ethiopians took refuge in Italy during the 1970s.