Individual #Byzantine_Empire__Eastern_Roman_Empire  a continuation of the Roman Empire in the East after AD 330 when Constantine the Great rebuilt Byzantium and called it Constantinople and made it his capital
  instance of:  geographical_area
  part of:  Roman_Empire
  part:  Byzantium  an ancient city on the Bosporus founded by the Greeks; site of modern Istanbul

No statement uses or specializes Byzantine_Empire; click here to add one.