How did americans learn about the Louisiana Territory

The U.S., under Jefferson, bought the Louisiana territory from France, under the rule of Napoleon, in 1803. The U.S. paid $15 million for the Louisiana Purchase, and Napoleon gave up his empire in North America. The U.S. gained control of Mississippi trade route and doubled its size

Explanation:

The Louisiana Purchase (1803) was a land deal between the United States and France, in which the U.S. acquired approximately 827,000 square miles of land west of the Mississippi River for $15 million

answer --

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