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This allowed the US all the land east on the Mississippi. (Date not exact)
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This territorial aquisition is when Thomas Jefferson bought a lot of land west of the Mississippi from France. ( DAte not exact)
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The Spansih ceded Florida to the US in 1819. (Date not exact)
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After lots of argument and discussion Congress finally decided to annex texas as a US state. (Date not exact)
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Oregon Country was gained by the US in 1846 by the British. (Date not exact)
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After the Mexican American War, Mexico decided to cede a large part of the now southwest US.
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After lots of heated discussion and negotiations, the US just decided to buy all the remaining land north of the Rio Grande.