Final answer:
The relationship between Charlemagne and the Catholic Church was mutually beneficial. The Church offered Charlemagne legitimacy and support, while Charlemagne protected and financed the Church. Additionally, they collaborated in spreading Christianity, improving education, and maintaining order.
Step-by-step explanation:
Charlemagne's relationship with the Catholic Church was mutually beneficial. The Catholic Church provided Charlemagne with legitimacy and support for his rule, which in turn boosted his authority and power (Option A). As a reciprocal gesture, Charlemagne provided the Church with protection and financial resources, thus enabling its activities and enhancing its influence (Option B).
Moreover, their cooperative relationship furthered the spread of Christianity and led to significant improvements in education throughout Charlemagne's realm (Option C). They also worked together to suppress dissent, thereby maintaining social order and political stability (Option D). Thus, the collaboration was advantageous for both parties and the people within the empire.
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