What caused Christianity to split into Roman Catholic and Eastern Orthodox?

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. read more

Roman Catholic AnswerThe reasons that caused the Eastern Orthodox to split from the Church were many and varied, and built up over a very long time. They were mainly political. The reasons given today: the Filoque clause of the Nicene Creed, the use of unleavened bread in the West and leavened in the East, the primacy of Bishop of Rome, are all factors which have been given - after the fact, but were not the causes. read more

And finally after many sad and heartbreaking arguments and decisions, the Church split in half: "The Great Schism occurred in 1054 A.D. which separated the Christian Church into two parts, the Western Church known as the Roman Catholic Church and the Eastern Church known as the Orthodox Church. read more