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Mu'awiya ibn Abu Sufyan was a governor of Syria during the reign of Caliph Uthman. Mu'awiya was the son of Abu Sufyan, a prominent member of the Umayyad clan, and a cousin of Muhammad. He was appointed governor of Syria by Caliph Uthman in 640 CE. Mu'awiya was a successful military leader and expanded the Umayyad caliphate to include North Africa, Egypt, and the Iberian Peninsula.