Charlemagne was a king in Europe who wanted to establish a christian empire. In 799, Pope Leo III was being forced from office. Fortunately, Pope Leo III asked for Charlemagne's protection.
I am the most powerful!
Charlemagne agreed and is crowned the Holy Roman Emperor. As a result, the Pope won his power to crown emperors and this angered the Byzantine Empire. They thought that only another emperor could crown an emperor.
Leave this church and never come again.
Charlemagne believed that God had made him emperor. The pope believed that the church had made Charlemagne the emperor. Two- hundred years later, these different views led to a dramatic clash between an emperor and the Pope.
I have finally won.
In 1703, Pope Gregory issued a list of rules declaring his supreme authority over both church and secular leaders. He declared that only the Pope could choose bishops. King Henry IV disagreed wit this, Both men were in an argument involving power.
When Henry ignored the Pope's rules and named his own bishop, Pope Gregory appointed a rival bishop. After that, Henry tried to remove Gregory from power, so Henry was excommunicated from the church. The Pope then freed Henry's subjects from their feudal oaths of loyalty.
Pope Gregory forgave Henry, but Henry used an army to force the Pope from office. Later, the church and the Holy Roman Empire reached an agreement called the Concordat of Worms. This gave the church authority to choose bishops, and it allowed emperors to give fiefs. Unfortunately, Popes and rulers still continued to have conflicts.