Louisiana Purchase Treaty
Louisiana Purchase Treaty
Louisiana Purchase Treaty, April 30, 1803; General Records of the U.S. Government; Record Group 11; National Archives.
In this transaction with France, signed on April 30, 1803, the United States purchased 828,000 square miles of land west of the Mississippi River for $15 million. For roughly 4 cents an acre, the United States doubled its size, expanding the nation westward.
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