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United States
The United States didn't always own all the land that amkes up the country today. Most of the land, for example, Florida, Texas, and Oregon were once owned by another country. -
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Westward Expansion
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Louisiana Purchase
The Louisiana Purchase was when the United States agreed to pay $15 million for about 828,000 square miles of land that stretched from the Mississippi River to the Rocky Mountains and from the Gulf of Mexico to Canada. -
West Florida Annexation
During the years of 1810 and 1813 the West Florida annexation plot occurred. It was a U.S. imperialist covert operation designed to gain control of West Florida from Spain. -
West Florida Annexation
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Red River Cession
The Red River CessionTreaty of 1818 with Great Britain resolved standing boundary issues between the two nations. The treaty allowed for joint occupation and settlement of the Oregon Country. -
East Florida
East Florida was a treaty between the United States and Spain in 1819 that ceded Florida to the U.S. and defined the boundary between the U.S. and New Spain (now Mexico). -
Webster Ashburton Treaty
American and British forces contended for Maine's territory during the American Revolution and the War of 1812 because it was physically separated from the rest of Massachusetts. -
Texas Annexation
The Texas annexation was the 1845 incorporation of the Republic of Texas into the United States of America, which was admitted to the Union as the 28th state. -
Oregon Territory
The Oregon Territory was divided between the U.S. and Great Britain in 1846. -
Mexican Cession
The Mexican Cession of 1848 was when Mexico ceded to the U.S. in the Treaty of Guadalupe Hidalgo in 1848.The Mexican Cession (529,000 sq. miles) was the third largest acquisition of territory in the US history. -
Gadsden Purchase
The Gadsden Purchase was purchased by the United States in a treaty signed on December 30, 1853 by James Gadsden who was the American ambassador to Mexico at that time
