I will be able to help you and keep you safe here.
I now crown Charlemagne emperor!
I can't believe this is happening!
I hereby declare this new set of rules that will help improve the Church for all!
Charlemagne was a devout Christian who set out to improve the church and rule in a Christian manner. Then, Pope Leo fled to Charlemagne's court because people wanted him out of the office. Charlemagne was able to keep Pope Leo safe.
Does he think he has more power than me? I'll show him who has the real power in this empire!
In return, Pope Leo crowned Charlemagne emperor. This event caused conflict between the church because the Church in Western Europe was strengthened, but the Church in Eastern Europe thought that the pope being able to crown an emperor was an insult to the Byzantine emperor.
I now appoint you bishop!
Later, in 1073, a monk named Hildebrand became Pope Gregory VII. He issued a set of rules that declared his authority over the Church and the secular rulers. It also gave him the power to be able to choose bishops.
I should have all the power and not you!
King Henry IV heard about Pope Gregory's new rules. King Henry was mad because it was a direct attack on his own power and rights.
King Henry ignored the pope’s rules and named his own bishop. Pope Gregory also appointed a rival bishop, and that made Henry try to remove Gregory as pope. Eventually, Pope Gregory excommunicated Henry. Across Europe, members of the clergy and secular rules took sides.
The power struggle between popes and kings continued after Pope Gregory and King Henry died. A new agreement called The Concordat of Worms was made, which allowed popes to appoint bishops, but it also allowed emperors to give fiefs to bishops to win their loyalty. This agreement was not successful because popes and kings continued to have conflicts with each other.