What is the Louisiana purchase 1803

a land agreement between united states and france.

Explanation:

The Louisiana Purchase (1803) was a land agreement 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.

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answer; i believe that the correct answer is (agriculture);

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.