Question: During the Hunnic Invastion of 451 Flavius Aetius ended the invastion of a ruler who was the leader of the Huns, Alans and what other groups of people?
Sentence (from "Attila"): He was also the leader of a tribal empire consisting of Huns, Ostrogoths, and Alans among others, on the territory of Central and Eastern Europe.
Relevant evidence: Yes