Now, Rome is significant because according to tradition, the church at Rome was founded by the Apostle Peter, who was considered by many to be the first amongst the apostles. But of course, Rome was the seat of the Roman Empire for a very, very, very long time. And so you could imagine the bishop of the Church of Rome, the Pope of Rome, would be a very powerful figure. Now, you also have the bishop or the patriarch of Constantinople, which is another capital, and really the capital, of the Byzantine Empire. And so what we're going to see over the next several hundred years is a jockeying for position amongst these three in particular, the Byzantine Emperor and the Pope of Rome. The Pope of Rome starts to consider themselves as really the leader of all of Christendom. The patriarch of Constantinople and the bishops of the other major centers of Christianity, like Antioch and Jerusalem and Alexandria, they view themselves as all kind of a college of us peers, and they will give extra space for the Pope of Rome or the Bishop of Rome because of the importance of that city and the significance of how the Church of Rome was founded.