The type of challenges done by Abbasid in the Imamate

The Abbasid whom take advantage of anti-Umayyad's impressions of Islamic society, especially of the lovers of Ahl-Al-Bayt, had a feasible plan to stabilize their authority and to develop their reign. In the first period of their reign, they sway all the political and religious tendencies to themselves. They utilige all the tools to legitimge their authority. Their political, cultural acts made many doubts about the issue of Imamate and its related topics. This article revise the Abbasids act, to challenge the line of the shia beliefs in Imamate, in order to attain their goals.