Which group was critically important to the revival of learning during Charlemagne's reign?

A) Wealthy noblemen
B) Barbarian travelers
C) Monastic communities
D) Viking converts

Charlemagne's Reign

The period during which Charlemagne ruled as King of the Franks and Lombards and later as the Emperor of the Carolingian Empire, from the late 8th century to the early 9th century.

Monastic Communities

Monastic communities are groups of individuals, such as monks or nuns, who live together in seclusion from the outside world, dedicating their lives to religious practice and contemplation.