He declared papal supremacy. Declaring that not following the will of the Pope is not following the will of God.
When the French Popes are under Philip II's command
When there are three Popes, which wont resign and have all excommunicated each other.
Never accomplishes anything but adds the three Pope into reign.
War with England and France between the English lands in France.
A war between nobility for power after the war. The Lancaster house won.