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Period: to
Westward Expansion
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Louisiana Purchase
It was the acquisition by the United States of America in 1803 of 828,000 square miles of France's claim to the territory of Louisiana. -
British Cession
It was a treaty signed in 1818 between the United States and the United Kingdom. It resolved standing boundary issues between the two nations, and allowed for joint occupation and settlement of the Oregon Country -
Adams-Onis
It was a treaty between the United States and Spain in 1819 that gave West Florida to the U.S. and set out a boundary between the U.S. and New Spain (now Mexico). It settled a standing border dispute between the two countries and was considered a triumph of American diplomacy. -
Texas Annexation
The Texas annexation was the 1845 incorporation into the United States of America of the Republic of Texas, which was admitted to the Union as the 28th state. -
Mexican Cession
In February 1848, the two countries signed the Treaty of Guadalupe-Hidalgo. The treaty recognized Texas as a U.S. state, and ceded a large chunk of land to the United States for the cost of $15 million. -
Oregon Territory
Congress passed the Act to Establish the Territorial Government of Oregon, which created what was officially the Territory of Oregon.The Territory of Oregon originally encompassed all of the present-day states of Idaho, Oregon and Washington, as well as those parts of present day Montana and Wyoming west of the Continental Divide. It extended from the 42nd parallel north snd in the south to the 49th parallel. -
Gadsden Purchase
The Gadsden Purchase is a 29,640-square-mile region of present-day southern Arizona and southwestern New Mexico that was purchased by the United States in a treaty signed by James Gadsden
