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After putting down a revolt by Greek city-states within his empire in Asia Minor, Darius sent a punitive expedition to mainland Greece in 490 BCE to punish Eretria and Athens for assisting the revolt. Eretria was captured but Athens turned the expedition back at Marathon.

Darius then planned a full scale invasion to bring all of mainland Greece within his empire and stop this interference in the harmony of his empire. He died before mounting this invasion, but it was carried out by his successor Xerxes in 480-479 BCE. It failed..

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11y ago

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