Final answer:
The Catholic Church's significance in European life during the Middle Ages was primarily due to providing a shared set of beliefs, spiritual guidance, and cultural preservation.
Explanation:
The Catholic Church was important to Europe during the Middle Ages because it gave Europeans a shared set of beliefs. The Church played a central role in the lives of Europeans by providing spiritual guidance, preserving cultural traditions, and legitimizing rulers through Christianization. Additionally, the Church helped convert Germanic peoples to Christianity, preserved classical knowledge, and collaborated with rulers to unify populations under Christian faith.
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