The influence of migration and displacement on the demography and economy of the Kurdish regions during 5th and 6th Hijri/ 11th and 12 centuries

چکیده

The migration of the human being has had a long history on this glob, because this is a phenomenon of the nature of people. There are reasons, targets and consequences of the migration. The  main reason of choosing this title are several results of migration, which have not had been studied by other Kurdish researchers yet, there were several political and military events which took place during 5th and 6th Hijri/ 11th and 12 centuries. This research contains of an introduction and three sections, in the first section the words of migration and displacement in both situation term and language have been defined, the second section has been detected to explain Kurdish regions in terms of geography, in the third section talks about the influence of migration and displacement  on the demography and economy aspects. Finally, the research ends with a set of conclusions.