What happened when Charlemagne's government failed to protect its people from Viking invaders?

Group of answer choices

The Catholic Church sent knights on a crusade against the Vikings.

Local nobles eventually took power, and a feudal system appeared.

Knights terrorized most of the European settlements.

The landowning lords staged a revolution against Charlemagne.

When Charlemagne's government failed to protect its people from Viking invaders The landowning lords staged a revolution against Charlemagne.

Explanation:

Charlemagne was the ruler of Rome in one of ts most turbulent periods when the size of the empire was simply too big for the government to properly administer it with the center as weak as it was in his time.

So the government had to rely on the Knights Templar to their job which in the end emboldened the feudal and lords to stage an open rebellion against Charlemagne that he was not able to fend off.

Eventually the Roman empire would collapse with the attack of many such tribes