306 COUNCIL OF ELVIRA
One of the earliest Christian councils, it decreed that intermarriage and social intercourse with Jews were forbidden.
307 - 337 CONSTANTINE (Roman Empire)
United the Roman Empire. Part of his policy was to protect Jews who converted to Christianity. Constantine also founded a new capital city in the East at Constantinople (modern Istanbul). This reflected the increasing weakness of the Western part of the Roman Empire and the strengthening of the Eastern part.