April 30, 1803: France and United States sign Louisiana Purchase

France sold the United States the entire Louisiana colony, over 800,000 square miles, for $15 million.  The United States gained the port city of New Orleans, which was critical for commerce.

Image:  Departure of Governor W.C.C. Claiborne and General James Wilkinson from Fort Adams, Mississippi Territory, December 10, 1803, for New Orleans to receive the Louisiana Purchase.

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