Answer:Well first off, The U.S gained the land from the Spanish, British, and the French. The U.S gained Louisiana in The Louisiana Purchase in 1803 from the French. We of course got all the British land when we drove them out in the revolutionary war, but we got California, Nevada, Utah, most of Arizona, and about half of New Mexico from the Spanish/Mexicans.
Hope this helps, Good luck brother, social studies was one of my fav's in middle school. :)
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