As Charlemagne I declare that you guys strictly follow the church rules and do as I say
Yes sir, I promise I will.
Sir, please help me I am in trouble.
Perfect, thank you for your protection.
Thank you God, I promise to do you're work on Earth.
It all started when their was a devout christian who wanted to thank God by his victories by improving the church. To do this, he ordered priests, monks, and nuns to live strictly by church rules, then scholars at his court edited manuscripts to create a library of Christian texts. He also wanted to become emperor because its title gave the ruler a special relationship with God.
Here are my rules that everyone should follow
Later, in 799, Pope Leo III visited Charlemagne for safety at his court because rivals in Rome planned to blind him and remove him from office. A few months later, the pope returned to Rome under the king's protection. Then, the following year, Leo thanked Charlemagne by crowning him emperor in a coronation.
Because he ignored my rules and named his own bishop!
Why are we excommunicating Henry?
Charlemagne was honored and believed that God crowned him and made him emperor to do God's work on land. However, the pope believed that the church crowned him and made him emperor. This then created a huge clash between king and pope 200 years later which brings us to 1073.
Thank you and I accept your apology
Later, in 1073, Pope Gregory issued a list of rules declaring his supreme authority over both church and secular leaders. King Henry IV found this as a direct attack on his own power and rights. So, King Henry ignored the pope’s rules and named his own bishop for the city of Milan, Italy.
Because of this, Pope Gregory appointed a rival bishop, excommunicated Henry, and freed Henry’s subjects from their feudal oaths of loyalty to the emperor. Then across Europe, members of the clergy and secular rulers took sides. Therefore, Henry left to the pope's castle and asked for forgiveness.
Although the pope forgave him, Henry later took revenge on the pope by marching his army to Rome and forced the pope from office. Then, in 1122, the Church and Holy Roman Empire reached an agreement called the Concordat of Worms. This is about the Church and sole authority to appoint bishops. Even though this helped, the conflict between emperors and popes continued.
Oh Pope Gregory, please, please, forgive me for all the pain have cause