Fezzan
Fezzan, along with the northern regions of Tripolitania and Cryenania, merged under Italian rule in 1912. After shifting powers, the United Kingdom of Libya was formed in 1951, which maintained the 3 provinces. Though the provinces became obsolete when Libya turned into a unitary state in 1963.
"Fezzan". Encyclopedia Britannica. Encyclopedia Britannica. Web. 2016. https://www.britannica.com/place/Fezzan