Answer:
ʿAbbasid caliphate, second of the two great dynasties of the Muslim empire of the caliphate. It overthrew the Umayyad caliphate in 750 ce and reigned as the Abbasid caliphate until it was destroyed by the Mongol invasion in 1258. The name is derived from that of the uncle of the Prophet Muhammad, al-ʿAbbās (died c.
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