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Prior to the Louisiana Purchase in 1803, the western border of the US was mostly the Mississippi River.

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Orval Kuphal

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2y ago
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14y ago

The Mississippi River

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11y ago
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10y ago
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14y ago

pacific ocean

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10y ago

The Mississippi River

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11y ago

Po

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Q: What body of water formed the western boundary of the unites states?
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