Long before that in 1054, was the East - West Schism that split the Catholic and Orthodox churches. https://en.wikipedia.org/wiki/East%E2%80%93West_Schism https

Long before that in 1054, was the East - West Schism that split the Catholic and Orthodox churches. https://en.wikipedia.org/wiki/East%E2%80%93West_Schism https://en.wikipedia.org/wiki/East%E2%80%93West_Schism