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In 1803, the U.S. purchased 828,000 square miles of land from the french for 50 million francs (11,250,000$) or four U.S. cents an acre.
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It was signed between the U.S. and the United Kingdom. It resolved boundary lines between the two. Britian ceded its land south of the 49th parallel and west to the Rocly Mountains. They kept land above Montana in present day Canada
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In this treaty with spain, the U.S. gained west Florida and set a boundary between the U.S. and New Spain.
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After gaining their independence from The Republic of Mexico, Texas wanted to be added into the US. The US approved the Annexation of Texas and then became a state.
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In the Treaty of Guadalupe Hidalgo, Mexico ceded much of the present day southwestern U.S. to theU.S.
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in 1854, the U.S. purchased 29,640 square miles from Mexico in a treaty signed by James Gadsden in present day New Mexico and Arizona. It costs us 10 million at the time.
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with the signing of the Oregon Treaty, the British gained sole possession of the land north of the 49th parallel and all of Vancouver Island, with the United States receiving the territory south of that line, oregon
