Byzantine Empire each time growing and shrinking 

This video will show the Byzantine empire's miracles by how each time it will get more land or lose land. For example: in 1078, when the Seljuks took most of Asia minor, The Byzantine empire was in its decline. But Alexius I came and regained most of the land. Like that, it had happened many times to the Byzantine empire. The video will show all of the occurences, so enjoy!