The US bought the Louisiana purchase from France in 1803.
The Senate ratified the treaty October 20, 1803, and the United States took possession of the territory December 20, 1803.
It occured in the year of 1803.
the year was April 30, 1803.
It was purchased in 1803.
1803
In 1803.
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Louisiana Purchase 1803
1802, and remember that the Louisiana Purchase didn't just cover the STATE of Louisiana as we know it today, the Purchase stretched from the Appalachians to modern day Oregon.