From early in the history of Christendom, there were five major cities known as “Patriarchates.” Each of these cities had bishops known as “Patriarchs,” who were the five most influential bishops. The five cities were Rome, Constantinople, Alexandria, Antioch, and Jerusalem.
The “Great Schism” was the split in the Church between the East (centered in Constantinople) and the West (centered in Rome). This occurred in 1054 because of multiple factors including the East not recognizing the Pope’s authority. There were many differences between the East and West like separate liturgies and language barriers. In the 300s the balance of power shifted towards Constantinople instead of Rome, with Constantinople even being dubbed “New Rome.” In 381 the seat of authority in Constantinople was declared to have “primacy of honor” after Rome, despite Rome not accepting these decrees.
Anti-Latin sentiment began to spread in the East after the Patriarch of Constantinople Ignatius was deposed for forbidding a man’s communion. A layman named Photius was appointed in only six days, and the Pope sided with Ignatius saying he was unjustly deposed. In 867 Photius declared the Pope excommunicated and guilty of heresy. All Latin churches were closed in Constantinople in 1053 with the East and West splitting officially in 1054.
Emerging as a new dynasty in France, the Capetians began to gain power in 987. Hugh Capet was the first of the Capetians kings. Despite being King of France, he was weak and held the title in name only, being elected the great lords of the realm. The Capetians had three main goals: acquire full control over the area around Paris, bring additional French territory under their control, and exercise control over the lords of large principalities. Surprisingly, the Capetians managed to accomplish all of this by using strategic marriage policies and grabbing fiefs of deceased vassals who lacked heirs. Vassals who were unfaithful to feudal obligations to the king were dispossessed. Two strong Capetians kings who ruled in the twelfth century were Philip I (1060-1108) and Louis the Fat (1108-1137) started this process. Under another Capetian, Philip II Augustus, France became the dominant power in Europe, highly centralized, and developed a sophisticated administrative system.