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Where did Constantine I defeat Licinius in 324?
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Constantine I
Portrait head of Constantine I, marble, Roman, c. 325–370 ce; in the Metropolitan Museum of Art, New York City.
In 324, Constantine I defeated Licinius in two decisive engagements: first at Adrianople (modern Edirne, Turkey) and subsequently at Chrysopolis (modern Üsküdar, Turkey). Following these victories, Licinius surrendered, and Constantine became the sole emperor of both the East and the West.12