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Dec 25, 800
Charlemagne is crowned Holy Roman Emperor
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Feb 2, 962
Otto I is crowned Holy Roman Emperor becoming Charlemagne's successor
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Apr 14, 972
Byztantine princess Theophanu marries the son of Otto I, Imp relations with the Byzantine Empire
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May 29, 1453
The Byzantine Empire falls to the Ottoman Turks
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The Sykes-Picot agreement