D. The Church served as the unifying power in society.
The emergence of medieval feudalism in Europe created a decentralized political structure where local lords held power and land. In this context, the Catholic Church became a crucial unifying force, providing a sense of stability and continuity. It offered spiritual and social cohesion, maintained moral authority, and facilitated communication between different regions. The Church's influence and authority allowed it to play a central role in everyday life, bridging various local powers and fostering a sense of community among diverse groups.