The correctoption is B
The Byzantine Empire or Byzantium was the eastern part of the Roman Empire that survived throughout the Middle Ages and the beginning of the Renaissance. This empire was located in the eastern Mediterranean. Its capital was in Constantinople, whose oldest name was Byzantium, an important city of Greek Thrace founded in 650 BC. C. The Byzantine Empire is also known as the Eastern Roman Empire, especially to refer to its first centuries of existence, during late Antiquity, time when the Western Roman Empire still existed. Since the Roman Empire had established that the language in the whole territory should be Greek, historians in general agree that the Byzantine Empire was a Greek empire in political alliance with Rome.
