List three ways that the Roman Catholic Church differed from the Greek Orthodox Church during the early Christian era?

During the early Christian era, before the Great Schism, the Roman Catholic Church and the Greek Orthodox Church did not exist as separate entities - there was only a Church that is now called the Catholic-Orthodox Church. Nevertheless, there were differences between the two sections of the one Church:

1. The western Church, which was later to become the Roman Catholic Church, used Latin, while the eastern Churches used Greek;
2. The western Church celebrated Easter at a different time of year than the eastern Churches.
3. The bishop of Rome regarded himself as of higher standing in the Church than the other Metropolitans of the Church;
4. The eastern primates generally had more autonomy from decision of the emperor than did the bishop of Rome.