Study of origins and migration of Khenesir tribe on the northern coast of the Persian Gulf

Numerous toponyms are seen through texts in northern littoral of Persian Gulf which their function has been changed or forgotten due to pass of time. Despite the numerous researches on domain of historical geography of Persian Gulf, still there are many ambiguous dimensions in this area. One of the names is Khenesir which was the name of a geographical region before and is the name of a collection of tribes now. The purpose of this study is to analyze the evolution of the word over time and to study the migrations of the residents of Khenesir region. The present study is done by historical method and with an analytical-explanatory approach basing library resources, field researches and oral researches. Discoveries and historical evidence of this paper indicates that the origin of the of Khenesir tribe was located in the south of Tangsir (Tangestan) and obedient of Khan Dashti. In the beginning this region was defined to Kabgan village and adjacent but later expanded. Population explosion and reduction of agricultural land together with insecurity and unemployment have been the main reasons of migrant sending and lack of development in this area. Another achievement of this research is to investigate the backgrounds of slums formation in the south of the high wall of Bushehr seaport and explaining its exact location.