Explain the two churches in the east and west in the middle ages

Eastern Orthodox Catholics and Roman Catholics are the result of what is known as the East-West Schism (or Great Schism) of 1054, when medieval Christianity split into two branches.

The Byzantine split with Roman Catholicism came about when Pope Leo III crowned Charlemagne, King of the Franks, as Holy Roman Emperor in 800. From the Byzantine viewpoint, this was a slap to the Eastern Emperor and the Byzantine Empire itself — an empire that had withstood barbarian invasions and upheld the faith for centuries. After Rome fell in 476, Byzantium was the only vestige of the Holy Roman Empire.

Charlemagne’s crowning made the Byzantine Emperor redundant, and relations between the East and the West deteriorated until a formal split occurred in 1054. The Eastern Church became the Greek Orthodox Church by severing all ties with Rome and the Roman Catholic Church — from the pope to the Holy Roman Emperor on down.

Over the centuries, the Eastern Church and Western Church became more 

distant and isolated 

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