Question: when did the catholic church become the catholic church

title: History of the Catholic Church
text: During the 11th century , the East -- West schism permanently divided Christianity . It arose over a dispute on whether Constantinople or Rome held jurisdiction over the church in Sicily and led to mutual excommunications in 1054 . 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 . The Second Council of Lyon ( 1274 ) and the Council of Florence ( 1439 ) both failed to heal the schism . Some Eastern churches have since reunited with the Catholic Church , and others claim never to have been out of communion with the pope . Officially , the two churches remain in schism , although excommunications were mutually lifted in 1965 . 

Answer: answer: During the 11th century, the East -- West schism permanently divided Christianity. 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.