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Period: to
Key Points of Expansion
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Louisiana Purchase
At a size of 828,000 sq miles, it was Spain's and then France's, and was bought by America for $15 million. The president at the time was Thomas Jefferson and was granted America's by the Louisiana Purchase Treaty. -
Red River Basin
The exact date that the Red River Basin was acquired is unknown, but it was acquired in 1818. It belonged to the British and the president of the time was James Monroe. The cost of this purchase of land is unknown, but it was granted by the Convention of 1818. -
Florida Treaty
During the 65,800 sq mile expansion, James Monroe was president. This land belonged to Spain and no money was paid but $5 million was granted to the citizens of America. -
Texas Annexation
Texas belonged to itself and was granted America's by the Treaty of Annexation. The piece of land was 525,000 sq miles and cost $15 million. The exact date it was acquired is not known, but the presidents of the time were John Tyler and James Polk. -
Oregon Treaty
The Oregon Treaty did not cost anything and was granted to America by the former owner, which was Britian. The president at the time was James Pol and the treaty was signed on June 15, 1846. The size of this expansion is unknown. -
Mexican Cession
This 526,000 sq mile expansion cost $15 million and formerly belonged to Mexico. It was signed over to America in the Treaty of Guadalupe Hidalgo while James Polk was president in 1848. The exact date it was signed is unknown.
