What Eventually Stopped the Magyars from Coming Further into Europe

Multiple Choice

What eventually stopped the Magyars from coming further into Europe?

A) They were defeated by Otto I from the Eastern Empire.
B) They were coerced into the Byzantine army and defeated by the Turks.
C) They settled down and began farming around the Danube.
D) They were assimilated by the Huns.
E) They were captured by the Bulgars.