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This was the investiture controversy. The pope wanted to stop the emperor ordaining (investing) clergymen to high positions in the German church because he thought that only the pope, as a prelate had the right to do this. The emperor was opposed to this.
The battle of authority within the Emperor and the Church.
It was a confrontation between the Holy Roman Empire and the Papacy. Please see the link below.
The Emperors power was limited because if the king chose a good bishop he would be knowned in a good way nope
The issue was the Investiture Controversy, the question of who had the right to choose new bishops.
Yes, it was a controversy between the Donatist sect in Tunisia and the Bishop of Rome in the early 4th century B.C. The Roman emperor Constantine the Great unsuccessfully tried to mediate it.
Pope Gregory VII, and Henry IV
Henry wanted the right to name new bishops in his kingdom. Gregory stated that only the pope could elevate bishops. It became known as the Lay Investiture Controversy.
Concordat of Worms
The Concordat of Worms was an agreement between the Church and the Holy Roman Empire, signed in the City of Worms, in Germany, in 1122. It brought an end to the Investiture Controversy and recognized the right of the Church to appoint its own bishops. It was an important step toward the idea of separation of Church and State, and was an blow to the belief in the divine right of kings.
The Concordat of Worms was an agreement that ended an important controversy between the Church, under Pope Calixtus II, and the Holy Roman Emperor Henry V. The broader power struggle between the Church and monarchs had continued for some time. The agreement was that the Holy Roman Emperor had the right to confer secular authority on bishops, but the Church had the right to confer religious authority.
None. Many Roman emperors claimed connection with or favour by a deity, but never proclaimed themselves as a god.