Abstract:The world of Islam in Umayyah and Abbasiyyah Dynasties was in the hand of a single leader, however since the 10th century raised a new development by the presence of new leaders who was appointed by Khalifah as the vice leader in some Islamic worlds who were finally became the independent leader. Also, there were some leaders who against the Abbasiyah Khalifah and declared themselves as the conquers of Islamic worlds, such as Umayyah Dynasty in Spain, Fatimiah Dynasty in the North Africa… Show more
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