How did the crowning of Charlemagne affect the power of the Pope?

The crowning of Charlemagne as Emperor by Pope Leo III in 800 AD significantly enhanced the power of the Pope, as it symbolized the church's authority to confer legitimacy on secular rulers. This act established a precedent for the Pope's role in European politics, intertwining religious and political power. It also marked the beginning of the Holy Roman Empire, reinforcing the Pope's influence over European monarchs and solidifying the church's position as a central authority in Christendom. Ultimately, this event elevated the papacy's status and set the stage for future conflicts between church and state.