 Meanwhile, large-scale migrations into the Eastern Roman Empire started with the Goths and continued with Huns, Avars, Bulgars, Slavs, Pechenegs, Hungarians and Cumans.The invasions of Slavs were the most thoroughgoing, and they partially reduced the Romanic element in the Balkans.The invasion of the Turks and conquest of Constantinople in 1453 marked the end of the empire.