The battle of authority within the Emperor and the Church.
Dispute between the popes and the Holy Roman Emperors over who held ultimate authority over bishops in imperial lands.
The Mongolian invasion
The Investiture Controversy or Investiture Contest was the most significant conflict between Church and state in medieval Europe. In the 11th and 12th centuries, a series of popes challenged the authority of European monarchies.
He is most famous for the role he played in the Investiture Controversy with Henry IV.
It was a confrontation between the Holy Roman Empire and the Papacy. Please see the link below.
Henry, as the king, thought that he should appoint bishops in his kingdom. The pope felt that only the pope could appoint bishops. It is known as the investiture controversy.
the weakening and eventual break up of Germany. <----- Study Island
In the course of the Investiture Controversy, Henry IV had be excommunicated. In order to have the ban lifted, he went to see the Pope at Canossa to do penance. He stood in the snow three days, begging to be forgiven. Popular legend has him doing this barefoot. He was forgiven, but required to meet certain conditions, which he violated, and the problems continued. There is a link below to an article on the Investiture Controversy.
The conflict you are asking about is called the Investiture Controversy. There is a link below to an article on it.
Emperors and kings disagreed with the Popes over who should appoint bishops. The disagreement lead to the Investiture controversy.
The issue was the Investiture Controversy, the question of who had the right to choose new bishops.
The term is the Investiture Controversy,
Investiture