تدهور نظام ولاية العهد و أثره في سقوط الدولة الأموية

الملخص EN

The researcher concentrates in his research on the collapse of the system of of the state of the Covenant especially in the last years Umayyad state , this system which is founded by Muawiya Ibn Abi Sufian and other kings followed it, passes through different stages till the last stage which witnessed marked deterioration which finally lead to the collapse of Umayyad state , the researcher analyzed the most important novels that are concerned with the topic of research and reached at some important results: the system of the state of the Covenant that kept for the Umayyad their kingdoms for a long time finally lead to the collapse of Umayyad state because of the conflicts on the kingdom among the Umayyads themselves, this conflict encourages their opponents to do many revolutions that lead to the fall of Umayyad state.