Constantine the Great, Emperor of Rome

Flavius Valerius Aurelius Constantine (c. 272 - 337), better known as Constantine the Great, was perhaps the most important person in the development of the early Christian Church (after Jesus and Paul, naturally). Constantine's defeat of Maxentius at the Battle of the Milvian Bridge put him in a powerful position, but not one of supreme power. He controlled Italy, North Africa, and the Western provinces.

Constantine's chief goal was always creating and maintaining unity, be it political, economic or, eventually, religious. For Constantine, one of the greatest threats to Roman domination and peace was disunity. Christianity filled Constantine's need for a basis of religious unity quite well. Just as significant as Constantine’s conversion to and official toleration of Christianity was his unprecedented decision to move the capital of the Roman empire from Rome itself to Constantinople.