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Louisiana purchase
The Louisiana Purchase (French: Vente de la Louisiane "Sale of Louisiana") was the acquisition by the United States of America in 1803 of 828,000 square miles (2,144,000 square kilometers or 529,920,000 acres) of France's claim to the territory of Louisiana. -
British Cession
Britain and the U.S. agreed to make 49o
the border between Canada and U.S.
from Lake of the Woods in Minnesota to
the Rockies -
Adams-Onis
The Adams-Onís Treaty between the United States and Spain was negotiated by Secretary of State John Quincy Adams and the Spanish Minister to the United States, Don Luis de Onís -
Mexican Cession
The treaty recognized Texas as a U.S. state, and ceded a large chunk of land, about half the area that belonged to the Mexican republic, to the United States for the cost of $15 million. -
Texas Annexation
Polk accomplished this through the annexation of Texas in 1845, the negotiation of the Oregon Treaty with Great Britain in 1846, and the conclusion of the Mexican-American War in 1848, which ended with the signing and ratification of the Treaty of Guadalupe-Hidalgo in 1848. -
Gadsden Purchase
The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico. Gadsden’s Purchase provided the land necessary for a southern transcontinental railroad and attempted to resolve conflicts that lingered after the Mexican-American War. -
Oregon Territory
The Territory of Oregon was an organized incorporated territory of the United States that existed from August 14, 1848, until February 14, 1859, when the southwestern portion of the territory was admitted to the Union as the State of Oregon
