Darius III

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Darius III (c.380–330 bc) King of Persia (336–330 bc). He underestimated Alexander the Great, and brought about the demise of the Achaemenid Persian Empire. Defeated at Issus (333 bc) and Gaugamela (331 bc), he fled to Ecbatana and then to Bactria, where he was killed.