History of Europe
In 395 Theodosius I, who had made Christianity the official religion of the Roman Empire, would be the last emperor to preside over a united Roman Empire. The empire was split into two halves: the Western Roman Empire centred in Ravenna, and the Eastern Roman Empire (later to be referred to as the Byzantine Empire) centred in Constantinople. The Roman Empire was repeatedly attacked by Hunnic, Germanic, Slavic and other “barbarian” tribes (see: Migration Period), and in 476 finally the Western part fell to the Heruli chieftain Odoacer.
List of Roman consuls
As an institution, the consulship survived the abdication of the last emperor of the West, and for a time consuls continued to be appointed, one representing the Eastern Roman Empire, and the other the Western, even as the Western Empire dissolved as a political entity. The last consuls appointed represented only the Eastern Empire, until finally the title became the sole province of the Emperor, who might or might not assume it upon taking office.