Investigation of Shiism current opportunities from the fall of Baghdad To the establishment of the Safavid dynasty

Recognizing Shiism in the Safavid period is a phenomenon which is rooted in centuries, currents, and ups and downs that Shiism faced in its attempt to prove itself. The present study made an attempt to examine Shiism, its opportunities from the fall of Baghdad to the establishment of Safavid dynasty, and the recognition of Iran's Twelver Shiism .The results revealed that ,in the course of Iran’s history, from the beginning until before the fall of Baghdad(656 A.H),the tendency to Shiite has been rising but it occurred slowly. However, after the Mongol devastating invasion of Iran and the Muslim world and the presented opportunities, Shiism current found such power and acceleration that, after nearly three centuries, despite various sects and religions in Iran, finally, it was formalized and conjoined with the Iranian identity.