He was crowned an Emperor, the first emperor of the Holy Roman Empire in 800.
The Frankish Empire was also called the Carolingian Empire after Charlemagne, its founder. The pope crowned Charlemagne as emperor. He did this as a reward for breaking Lombard rule in Italy. Charlemagne was given the title of 'Roman Emperor' to symbolise the independence of Italy and (western European) Roman Catholic Christendom form the Eastern Roman Empire which had controlled central Italy and the pope. Basically, Charlemagne was the emperor of Roman Catholic Christendom.
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.
In 800, Charlemagne traveled to Rome to crush an unruly mob that had attacked the pope. In gratitude, Pope Leo III crowned him emperor. The coronation was historic. A pope has claimed the political right to confer the title "Roman Emperor" on a European king. This event signaled the joining of Germanic power, the Church, and the heritage of the Roman Empire.
Pope Leo III crowned Charlemagne.
Charlemagne
Charlemagne's primary fear was the possibility of his empire falling apart after his death due to internal conflict or external invasions. To prevent this, he worked to consolidate his realm through administrative reforms, military conquests, and the promotion of education and culture to ensure a legacy of stability and cohesion.
Charlemagne was crowned (Western) Roman Emperor
He hoped to acknowledge Charlemagne as ruler of Europe.
charlemagne