Geographical range of Shiite resident areas and its impact on flourishing theology, jurisprudence and traditions and sayings during the absence of short duration

In investigating Shiite's mindset, one of the issues under discussion is to consider Shiites dispersion in different cities and get to know science centers in the absence of short duration.According to geographical and other sources Shiites in the past lived in different regions of Islamic countries. It is taken for granted that Shiites dispersion in different cities and regions has a remarkable impact on informing of Shiite sciences and ideas and developed several science centers and led to conspicuous developments in Shiite's scientific basis and thoughts. Bringing into existence of such developments was done during the absence of short duration and the achievements were observed several decades later. The present article aims at introducing Shiite's resident cities and attempts of great Shiite clergies in these cities to develop this period's Islamic sciences. The period under study is 260 to 329 Hijri.