Shushtar as one of the most important cities of Khuzestan in safavid era was inhabited by some officials and rulers mostly due to its specific geographical, strategic and military situation during the rule of Safavid dynasty. The establishment of new villages in Shushtar and its surroundings areas by the local rulers caused this city to grow and develop more. In the same regard, due to the entering of many different clans and tribes to Shushtar in the Safavid period, extensive ethnic conflicts emerged in this city. Turk Qizilbash (Shamlus, Rumlus, Afshars, Ustodjlus, Turkmens, and Dulghadirs), Chagatai family, Circassia, Georgians, great religious scholars from Jabal Amel region, Jazayeri and Kalantar Sadats were among the tribes and clans entering Shushtar in the Safavid period. At the end of this period, natural disasters such as flood influenced Shushtar status both socially and politically to a great extent. The current study attempts to describe the political and social conditions of Shushtar during the Safavid period, aiming to answer this question: Why was Shushtar under the spotlight by the Safavid rulers and inhabited by most governmental rulers and authorities? It is hypothesized in this study that due to the geographical and military situation, Shushtar have always been considered as a defensive barrier by the Safavids against Mushashaiyah central bases in the South of Khuzestan, and Ranshis bases in the North of Khuzestan and also against Bakhtiyari Khans. Unquestionably, taking into consideration the topics such as ethnic origin, tribal interests, occupation state, religious and social values, and changing or modification of each case can give provide us with some useful information about the social and political life of Shushtar in the Safavid period.

Natural phenomena are one of the influencing factors in the economic and social situation of human societies. However, it is clear that the mode and extent of this effect depends on the natural state of this or that area. On the other hand, Iran's historical events and circumstances appear to have been less studied geographically. The present study examines the probable impact of the natural phenomena of the Kerman province, their prominent and diverse natural and human characteristics on the sources of the Iakhanan period. For this purpose, it uses the historical and geographical reports of the 7th and 8th centuries. The above findings are important in this regard, demonstrating the history of economic developments in Kerman and other parts of Iran should not affect only in light of human events.