List the largest cities of the Caliphate and Byzantium that flourished in the 8th century.
| October 31, 2020 | Education
In the Caliphate: Damascus, Alexandria, Aleppo, Basra, Kufa, Mecca, Medina, Cairo, Rey (Tehran), Ctesiphon, Merv, Herat, Bukhara, Derbent. In Byzantium: Constantinople, Adrianople, Thessaloniki, Ephesus, Mi.chet, Athens, Corinth.
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