Which Byzantine Emperor did the Bulgars defeat to secure their right to settle south of the Danube?
Justinian I
Constantine IV
Theodosius II
Basil II
Answer
The Bulgars, led by Asparuh, defeated the Byzantine army led by Constantine IV, securing their right to settle south of the Danube. This victory marked the beginning of the First Bulgarian Empire.
Journey to the Past: The First Bulgarian Empire Trivia Challenge