The Battle of the Zab (AD 750): The Fall of the Umayyad Caliphate and the Rise of the Abbasids The Battle of the Zab (AD 750): The Fall of the Umayyad Caliphate and the Rise of the Abbasids 12/04/2026 12 Min Read 0 9 Fall of a Caliphate By AD 750, the Umayyad Caliphate, rulers of the Islamic world for nearly… Abbasid RevolutionAncient Battles Jishu Roy