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Document in which the British wrote that stated that Americans could not go west past the Appalachian Mountains.
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The United States gained this territory when the southeastern portion given to the union as the State of Ohio
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France sold 828,000 square miles of land the United States. President Thomas Jefferson doubled the size of the country.
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Were loyal to the British during the war, and after the Treaty of Paris 1783 returned to the Spanish control.
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Got states Minnesota and North Dakota with a treaty signed by Great Britain (Treaty Of Ghent)
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It was an agreement between the U.S. and England in 1842 making a boundary between Maine and present-day Minnesota.
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When the United States acquired Texas and then started the Mexican American war. Also extended the country all the way to the Pacific Ocean.
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Originally split between the United States and Great Britain in 1846. Admitted to the Union as the State of Oregon.
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Most of the land was Mexican territory.
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29,670 square miles of present-day Arizona and New-Mexico that was eventually was bought by the United States. The Treaty was signed by James Gadsden.
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Purchased from Russia on March 30, 1867 for $7.2 million.
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Joined the union on August 21, 1959. State made up entirely of islands.