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The U.S. government purchase a huge chunk of land from the french in 1803.
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Established the Britain and U.S. border at the 49th Parallel.
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the U.S. aquired the Florida Territory
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Texas became a state in 1845.
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A boundary dispute between the U.S. and Mexico was settled.
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The border dispute between britain and the U.S. was settled with the oregon treaty.
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The U.S. purchased southern Arizona and southwestern New Mexico.
