THE AVARS
 

The Avars originated in central Asia and were active and running from the 6th to the 9th century AD, when Charlemagne put an end to all the separate tribal business.

The Avars were in their zenith in the late 6th century. They even besieged Constantinople. The year? 626.

And these are the maps:

Europe and East Roman Empire 533 - 600
Click map to enlarge

814 Carolingian, Byzantine Empires and Califate