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Constantine The Great (Constantine I) founds Constantinople, which becomes the capital of the Eastern Roman Empire.
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The Arabs attack Constantinople for the first time, and are unsuccessful.
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The Arabs attack again, and are held off once more.
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The Orthodox Christian Byzantines are overthrown by Catholic Christian Crusaders, and Constantinople becomes a Catholic state.
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The Byzantine State of Nicaea recaptures Constantinople
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The Turks begin their siege on Constantinople. Their siege force contains cannons, between 200,000 and 300,000 troops, and almost 200 warships, compared to the Byzantine forces of between 7,000-10,000 troops and 26 warships.
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The city is overrun, leading to a decisive victory for the Turks.
