The Byzantine Empire

It is not possible to effectually distinguish between the later empire in Rome and the Byzantine empire centered around Constantinople. For the Byzantines were the Roman Empire, not simply a continuation of it in the East. The capital city, Constantinople, had been founded as the capital of Rome by the Emperor Constantine, but a uniquely Greek or Byzantine character to the Roman Empire can be distinguished as early as Diocletian. When Rome was seized by Goths, this was a great blow to the Roman Empire, but it didn't effectively end it. Although Rome was under the control of foreigners who themselves claimed to be continuing the empire, the Byzantine empire continued as before, believing themselves to be the Roman Empire.