How did Pope Leo III's crowning of Charlemagne as emperor of the Romans symbolize an increase in the Church's power?

It suggested that emperors have the right to choose the pope.

It suggested that the pope had the power to choose an emperor.

It gave the pope the authority to rule the empire.

It made the pope part of the emperor's court.

It suggested that the pope had the power to choose an emperor.

By crowning Charlemagne as emperor, Pope Leo III asserted the authority of the papacy to crown secular rulers and legitimize their rule. This symbolic act represented an increase in the Church's power by reinforcing the idea that the pope had the power to bestow or revoke imperial titles, thereby giving the Church a significant role in the political affairs of the empire.