Islamic Conquer of Sjistan until Umayyad Era A Historical Study

The current research deals with the geography and history of Sajestan. It tackes the Arabic Islamic efforts which were made by the first Muslims to liberate this region. These military expeditions started since the role of the caliphate Omer bin AL-khatab till the Amoy authority and the beginning of Abbasid authority. Islam expanded among them which failed their mutiny.
According to these efforts, we divide the research into many sections . The first one involves the geographical position and their people whereas the second one talks about the Islamic, Arabic efforts during the two ages, AL-Rashid and AL-Amoy finally, we talked about the great efforts which were done by Muslims in order to expand the Islam in this region.