Answer;
C. Attila the Hun
Step-by-step explanation;
-Attila the Hun was one of the most successful barbarian rulers of the Hunnic Empire, attacking the Eastern and Western Roman empires.
-Attila united the tribes of the Hun kingdom and was said to be a just ruler to his own people. However, Attila was also an aggressive and ruthless leader. He expanded the rule of the Huns to include many Germanic tribes and attacked the Eastern Roman Empire in wars of extraction, devastating lands from the Black Sea to the Mediterranean, and inspiring fear throughout the late Roman Empire.