Shay’s Rebellion should be the correct answer.
The Western Europe greatly suffered from the Viking raids.The economy went down and there was division among political leaders. With their raids, it also made the Europeans develop new strategies to defend their lands and army like the Franks who built castles and body armors.
The Tenth Amendment warns against using a list of rights to infer powers in the national government that were not granted. ... No law that would have been constitutional before the Tenth Amendment was ratified becomes unconstitutional simply because the Tenth Amendment exists.
Answer:
C) he established a relatively unified empire in medieval Europe.
Charlemagne was King of the Franks, King of the Lombards and Holy Roman Emperor. An accomplished statesman and ruler, he is most prominent in history for having been the first emperor in Western Europe since the fall of the Western Roman Empire. His state was the Carolingian Empire.