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When were Trajan’s two Dacian Wars fought?

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The two Dacian Wars fought by the Roman emperor Trajan took place during the following periods:

  • First Dacian War: 101–102 CE123
  • Second Dacian War: 105–106 CE123

These military campaigns resulted in the defeat of the Dacian king Decebalus and the annexation of Dacia as a Roman province.123