I got my power from God! Therefore, popes should have control over bishops!
God chose me as king, so I must be more important than you. Popes have much more power than they need! You popes are useless anyways.
How dare you! After all of the work I've done for this kingdom, you don't think I'm important? I'll excommunicate you! You have no right to go to Heaven after you say that to me.
During the middle 1000s, a chain of well-educated popes wanted to have more authority of the eastern bishops. Pope Leo IX, who grew to be the pope in 1049, believed in this also.
ORTHODOX CHURCH!!! WE LOVE THE BISHOP OF CONSTANTINOPLE!!!
POPE LEO IX!!! WE ARE THE ROMAN CATHOLICS!!!
Both the kings and popes thought that God had chosen them for their roles. Byzantines Patriarch Michael Cerularius, declined to acknowledge the supremacy of popes.
First, you make a terrible choice of a bishop, and now you want me down from power? Excommunicated!
I have to stay in power!
After Michael refused to acknowledge the popes' power, he was excommunicated by Pope Leo IX in 1054. This act was known as the Great Schism. Being excommunicated was devastating because it meant you couldn't go to Heaven.
After Pope Leo IX made this decision, there was an eternal split between the church. The Christians who agreed with the bishop of Constantinople were renamed the Orthodox Church. Whoever supported the Pope were renamed the Roman Catholics. Because of these supporters, Pope Leo IX was transformed into the head of the Roman Catholic Church.
In 1073, Pope Gregory VII came into power. Once he disapproved of a bishop that Emperor Henry IV had chosen, and then Henry got angry. This is because Pope Gregory had questioned his authority. Henry persuaded Germany's bishops to remove Gregory as pope. In return, Pope Gregory excommunicated Emperor Henry.
After he was excommunicated Emperor Henry IV was desperate to stay in power. To do this, he traveled all the way to Italy to see the pope. After Pope Gregory refused to see Henry, he stood outside in the snow for 3 days until Pope Gregory finally accepted his apology and accepted him back into the church.