 Complete the following phrase:  The EastWest Schism came about in a context of cultural differences between the Greek-speaking East and the Latin-speaking West and of rivalry between the Churches in Rome, which claimed a primacy not merely of honour but also of authority, and in Constantinople, which claimed parity with that in Rome. The rivalry and lack of comprehension gave rise to controversies, some of which appear already in the acts of the Quinisext Council of 692. At the 