Why did the Carolingian Empire break up within two generations of Charlemagne's death?

Question

A. Charlemagne had no surviving heirs.
B. The pope withdrew his support for the Carolingians.
C. The Carolingian dynasty returned to the Germanic problem of succession.
D. The Viking invasions destroyed the imperial structures.

Answer 1

Ans: C. The Carolingian dynasty returned to the Germanic problem of succession.