The quality of the establishment and consolidation Imami Shi'ism in Tabarestan (from the third century to the end of the eighth century AH)

The study of the Imami Shi'ism in Tabarestan and their establishment and consolidation is one of the important disputations of Shiite history in Iran. Therefore, the main question of this research is how the Imam of Shiism is transformed from the stage of deployment to its stabilization in that region. Looking for this question, this article proposes that Tabarestan, due to its specific political and geographical conditions, the acceptance of the Shi'a Alavid immigrants, activities of the Shiite scholars and support of the local rulers, has proper conditions for establishment and consolidation of Shiism. This research, by using of descriptive and analytical method, explains the process of the settlement and consolidation of Shi'ism in Tabaristan.  In this regard, the research findings shows that the residence of some followers of the Imams in Tabarestan, the propaganda activities of Alavid Sadat, the presence of religious scholars and Shi'ite leaders and their propaganda activities in Tabaristan, and the support of the rulers of Albawandi, Marashi and some Padosbani rulers of Shi'amami consolidated Imami Shi'ism in the early nineteenth A.H. in Mazandaran.