The Holy Father agreed to crown the Holy Roman Emperor as he would be the head of the secular power and lend support and aid to the Holy Father in the spiritual realm.
The pope crowned Charlemagne as King of the Holy Roman Empire in the year 800
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.
Pope Leo the Great convinced Attila the Hun to not invade Rome.
Charlemagne
Charlemagne in 800 CE
Napoleon crowned himself Emperor. This was already planned, and Pope Pius VII agreed.
He was not chosen pope by any king. Gregory was acclaimed pope by the citizens and clergy of Rome and then it was made official by an election carried out by the cardinals in April of the year 1073.
He crowned King rank the 24359443504th as the holy roman emporer
Yes, the pope is the bishop of Rome.
The Pope is the Bishop of Rome and the Vicar of Christ on Earth. There is nothing in Catholic doctrine or even custom to call him any title such as king of heavens and earth.
The pope's crown is called the papal tiara. There is a link below to an article on it.
The bishop of Rome is the pope. Currently pope Francis is the bishop of rome