The Pope was a powerful figure because of the position he held. The Roman Catholic Church was thought of as controlling you for all eternity, so you would want to respect its leader!
The pope was the most powerful man in medieval Europe.
Pope Innocent III was the most powerful pope of Medieval times.
The pope
I am not certain but I think the various popes of the Medieval time period converted just about all of Europe if it wasn't already converted before then.
Medieval Europe, not just the bishops, followed Christianity, in the form of the Catholic religion, those head was the Roman Pope.
With the pope but some power went to the counts as well.
pope innocent the 3rd was considered the most powerful person in Europe at the time
Simply because of two things: Prestige, and money. The pope was the most powerful figure at the time, which also meant that he was the richest.
Their wealth came from being bankers. They were the bankers to the Pope and pretty much all powerful rulers in Europe. They had banks throughout Europe.
Pope
The King, Pope and some medieval countries had emperors.
Charlemagne (Charles the great)