The Backgrounds of Appearance and Fixation of Zaidiyyah State Yemen

The entrance of Zaidiyyah Zaydi to Yemen and formation Zaidiyyah In the late second century State have been considered by researchers historically. Since appearance of Islam Yemenian had known whit Prophet and always had place influence on Islam history, whether in time of Ali and other caliphs or in evens related to after of Karbala. Their presence in different historic areas and their concern to Shi’ism had prepared them to acceptance of shi’ism. Zaiydyans, at first had activity against of central state, but their uprising was faced with failure. Thereby, they recognized that central points of Islamic world were not appropriate places to uprising. Then they chose other places. Among them,  Ghasem Rassi who had important role on formation of Zaidiyyah doctorines, with separation of political challenges and founding of a theological station in Rass and operating to cultural   affairs became able to providing appropriate theological system for Zaidiyyah.  By activities of Rassi, Yahya bn Hasan started his uprising in Tabarestan secretively. But because of domination of Mohammad bn Zaiyd in Tabarestan, he didn’t succeed and departed there. After this, he used from weaknesses of Abbasian and invited Yemenians to uprising against Abbasian, but he couldn’t achieve. In his second travel to Yemen, he used of internal situation of Yemen and again invited them uprising and thereby hr could establishe Zaidiyyah state in Yemen. That state has survived over 1200 years.