Byzantine Empire - 867-1453, Constantinople, Eastern Roman Empire
https://www.britannica.com/place/Byzantine-Empire/From-867-to-the-Ottoman-conquest
WebByzantine Empire - 867-1453, Constantinople, Eastern Roman Empire: Under the Macedonians, at least until the death of Basil II in 1025, the empire enjoyed a golden age. Its armies regained the initiative against the Arabs in the East, and its missionaries evangelized the Slavs, extending Byzantine influence in Russia and the Balkans.
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