Fine, I will help you. Don't worry. You are going to be under my protection.
Pope Leo III visited Charlemagne in 799. The Pope left Rome and fled across the Alps to Charlemagne's court. With the Kings protection he was able to return to Rome.
Oh Great Charlemagne save me from the evil people that are trying to blind me and send me out of office. Please help!
I can't believe I am now an Emperor. It's a dream come true.
Next year Charlemagne did a surprise visit to the Pope in Rome. Pope Leo crowned him emperor on Christmas Day. His dream had come true.
For your generosity and help I am proud to crown you Emperor.
If it wasnt for your protection I wouldn't be where I am right now.
Charlemagne's and Pope's beliefs clashed. Charlemagne believed that God made him emperor to do God's work and the pope should assist him. Pope Leo believed that the Church made Charlemagne emperor and it was his duty to assist the Church.
I am so powerfull I can do anything I want.
200 years later...
I can appoint bishops, remove emperors from their throne and I have supreme authority over church and non-church leaders.
King Henry the IV chose his own bishop for the city of Milan. He ignored the rules of Pope Gregory VII. This started a fight between them.
I shall name you Bishop of this fine city.
I hope the Pope doesn't get mad about this.
Thank you my King, I won't let you down.
The clash between King Henry and Pope Gregory had began. The Pope had strong ideas about his powers. The Holy Roman Emperor got insulted and felt attacked.
I can't believe the Pope hired a rival bishop. Now I shall fight back and remove him as pope.
I guess hiring a rival bishop isn't enough. I know what to do! I will excommunicate him and free his subjects from their oath of being loyal to him.
Across Europe, members of the clergy and secular rulers took sides. Henry begged the pope to forgive him and at the end the pope did but there was still conflict. Henry wanted revenge and forced the pope from office by sending his army to Rome. The conflicts between popes and rulers continued for many years.