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The Louisiana Purchase
Thomas Jefferson authorized the purchase of the land. The treaty was dated April 30, and signed May 2. -
Period: to
Western Expansion
This is the period of time when the U.S. started exploring and settling in the western regions. -
The Adams-Onís Treaty
This was the treaty where the U.S. got Florida from Spain. -
Texas Annexation
This is when Texas was accepted in to the Union. -
Oregon Treaty
This was when the treaty was signed between the U.K. and the U.S. -
The Treaty of Guadalupe-Hidalgo
This is when the treaty ending the Mexican-American War was signed. It also gave America a new area of land that would become part of present day California, Nevada, Texas, Arizona, Utah, and New Mexico. -
The Gadsden Purchase
On this day, James Gadsden presented the modified treaty to the Mexican president, Antonio de Santa Anna. It was then signed by Santa Anna. -
End of Westward Expansion
Westward Expansion ended when Arizona was admitted into the Union as the last of the 48 contiguos states.