The Umayyads succeeded in decentralizing the Islamic political and administrative structure. But they had to pay a heavy price for that. In 750, a group called Dawa ousted the Umayyads from power and installed the Abbasids on the throne. The Abbasid family was a rich one in Mecca. They pictured the Umayyad rule as misrule and assured the people that they would bring back-the real Islam preached by the Prophet. The Abbasid revolt caused changes not only in the ruling dynasty but also in the political structure and Islamic culture.
