when did the catholic church become the catholic church
History of the Catholic Church During the 11th century, the Eastâ€“West schism permanently divided Christianity.[85] It arose over a dispute on whether Constantinople or Rome held jurisdiction over the church in Sicily and led to mutual excommunications in 1054.[85] The Western (Latin) branch of Christianity has since become known as the Catholic Church, while the Eastern (Greek) branch became known as the Orthodox Church.[86][87] The Second Council of Lyon (1274) and the Council of Florence (1439) both failed to heal the schism.[88] Some Eastern churches have since reunited with the Catholic Church, and others claim never to have been out of communion with the pope.[87][89] Officially, the two churches remain in schism, although excommunications were mutually lifted in 1965.[90]