الهجرة في المشرق الإسلامي زمن الحروب الصليبية

Abstract EN

The Islamic Orient has experienced political tension and wars for many centuries where it witnessed the crusades that emerged in the fifth century and then the Mongol attack on the region with the fall of the capital of the Islamic State Bagdad, under these circumstances many residents of the region in the form of a mass migration towards safe areas to escape the wars It led to the demographic imbalance and the emergence of social and economic problems on the one hand and the emergence of a large group of scientists who contributed to the transmission and dissemination of science in many Muslim countries .