Byzantine Empire from 330 CE to 1453 | Britannica
https://www.britannica.com/summary/Byzantine-Empire
webByzantine Empire, Empire, southeastern and southern Europe and western Asia. It began as the city of Byzantium, which had grown from an ancient Greek colony founded on the European side of the Bosporus. The city was taken in 330 ce by Constantine I, who refounded it as Constantinople.
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