Charlemagne was not prepared for his coronation and may not have wanted to be crowned by the Pope. If the Pope had the power to crown Charlemagne king, the Pope might also have the right to remove the crown.
Supported the pope; pope crowned Charlemagne Emperor of the Roman people
The pope gave Charlemagne the title of Holy Roman Emperor, on Christmas Day of 799(?)/800
Charlemagne did not want people to think the pope had the power to choose who was emperor.
Pope Leo III crowned Charlemagne.
Charlemagne
He feared the pope who crowned him.
Charlemagne was crowned (Western) Roman Emperor
He hoped to acknowledge Charlemagne as ruler of Europe.
charlemagne
Charlemagne defeated the Lombards.
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