The Byzantine and Roman Empires (337 AD)
After Constantine died the Roman Empire split into East and West. The map shows the extent of the Byzantine Empire from 330AD. Having been started as a Greek Colony a 1,000 years before. Constantinople (Byzantium) was thoroughly Greek. The language of the Byzantine Empire was Koine-Greek, the same language in which the New Testament had been written. The Byzantines kept the Koine-Greek language in primary use until 1453.