Day of Revenge settlers by the 1960s. The Italian population was concentrated in the coast around the cities of Tripoli (37 percent of its population) and Bengasi (31 percent). With the Italian defeat in World War II, Italian influence waned. After several years under British mandate, on 24 December 1951 Libya declared its independence as the United Kingdom of Libya (a constitutional, hereditary monarchy under King Idris). Although many Italians had already left the former colony, many remained (primarily farmers and craftsmen). King Idris was a tolerant monarch, and generally treated the Italian population well. Libyan Jews (who had lived in Libya since
Italian East Africa that was the only one in all Africa. However Ethiopia and Africa Orientale Italiana (AOI) proved to be extremely expensive to maintain, as the budget for the fiscal year 1936-37 had been set at 19.136 billion lira to create the necessary infrastructure for the colony. At the time, Italy's entire yearly revenue was only 18.581 billion lira. The architects of the Fascist regime had drafted grandiose urbanistic projects for the enlargement of Addis Ababa, in order to build a state-of-the-art capital of the "Africa Orientale Italiana", but these architectural plans -like all the other developments- were stopped by World War