-
Period: to
Westward Expansion
-
Louisisana Purchase
530,000,000 acres of territory in North America that the United States purchased from France in 1803 for US $15 million -
treaty of 1818
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, known to the British and in Canadian history as the Columbia District of the Hudson's Bay Company, and including the southern portion of its sister district New Caledonia. -
Adams-Onis Treaty
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 -
Texas Annexation
incorporation into the United States of America of the Republic of Texas, which was admitted to the Union as the 28th state. -
Oregon Territory
a treaty between the United Kingdom and the United States that was signed on June 15, 1846, in Washington, D.C. The treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to the Oregon Country, which had been jointly occupied by both Britain and the U.S. since the Treaty of 1818. -
Mexican Cession
The Mexican Cession of 1848 is a historical name in the United States for the region of the modern day southwestern United States that Mexico ceded to the U.S. in the Treaty of Guadalupe Hidalgo in 1848, but had not been part of the areas east of the Rio Grande which had been claimed by the Republic, though the Texas annexation resolution two years earlier had not specified Texas's southern and western boundary. -
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
