he Imami Shi'ites who enjoyed relative prosperity and held political power during the Buyid rule experienced difficult times afrer the Seljuq invasion of Baghdad and the demise of the Buyids. The Seljuqs expelled them from their administrative positions; their religious leader, Sheikh Tusi, had to leave Baghdad; and following the suppression of the Shi'ah uprising in Baghdad's Karkh district, the Imamis were subject to constand harassment by the Sunnis. But this situation did not last long. During the Seljuq rule, the Shi'ites gradually reoccupied the positions of power. Dealing with the Shi'i emirs and viziers in Iran and in a more detailed way with the Mazyad clan (not well-known in modern Iran) as Shi'i governors of parts of Iraq, this article discusses the political reasons and factors responsible for this change.
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