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If you mean the land that eventually became Mexico, that would be somewhere between 443 and 416 million years ago, when the Gondwana supercontinent covered the equator and much of the Southern Hemisphere.
Mexico has been considered a human-populated region since some 13,000 years ago, during the last ice age.
As a modern country, Mexico has been a nation since 1821.
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∙ 13y ago
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