This Day in History: Louisiana Purchase Deal Gets Senate OK

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The French had been in control of the territory from 1699-1762 and then again from 1800, when it was bought back from the Spanish.

The nation doubled in size, with the future states of Louisiana, Arkansas, Missouri, Iowa, Oklahoma, Kansas, Nebraska, North Dakota, South Dakota, and parts of Minnesota, New Mexico, Montana, Wyoming, and Colorado joining the union.

The Senate vote was 24 to 7. But the deal had to go through some tricky legislative and judicial maneuvering and argumentation to comply with the U.S. Constitution.

Learn more about the Louisiana Purchase.