When and why did the Christian Church split into Catholic and Orthodox?

1054 is the year of the Great Schism of the Christian Church. As a result of this, the final division of the Christian church took place into the eastern, with the center in Constantinople, and the western, with the center in Rome. The crusades added fuel to the fire, as between the knights enjoying the support of Rome and the Byzantines professing Orthodoxy. The disputes between the Pope and the Patriarch of Constantinople were conducted around the conduct of rituals, dogmatic and canonical issues.

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