Postage stamps and postal history of Cyrenaica and Fezzan were united as the Italian colony of Libya. Stamps of colonial Cyrenaica were inscribed "Cirenaica" and printed at the Italian Government Printing Works. British stamps overprinted M.E.F. (Middle East Forces) were used from 1943 to 1948 after the area was captured by the British during World War II. From 1 July 1948 stamps overprinted "B.M.A. TRIPOLITANIA" were used. Cyrenaica enjoyed a brief period of internal autonomy in 1949-51 when the British authorities recognised Amir Mohammed Idris Al-Senussi as Emir of Cyrenaica, which ended on 24 December 1951 when Cyrenaica, Tripolitania and Fezzan were unified as the Kingdom of
Ptolemais, Cyrenaica port for the city of Barca, inland, he transformed into a city that enclosed 280 hectares within its walls. Ptolemais probably served as the residence of the Ptolemaic governor of the region but, in spite of its large area, its population did not rival that of Cyrene, which under Roman rule became the capital of the region that, from then on, and still today, is called Cyrenaica. However, the term "Pentapolis" also continued to be used. Ptolemais became a Roman possession in 96 BC. It was soon included in the Roman province of Crete and Cyrenaica. With Diocletian's alteration of