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Louisiana Purchase
The Louisiana Purchase was the acquisition of the Louisiana territory (828,000 square miles) by the United States from France in 1803. -
Adams, onis treaty
The Adams–Onís Treaty of 1819, also known as the Transcontinental Treaty, the Florida Purchase Treaty, or the Florida Treaty, 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. -
54 40 or fight
Polk called for expansion that included Texas, California, and the entire Oregon territory. The northern boundary of Oregon was the latitude line of 54 degrees, 40 minutes. "Fifty-four forty or fight!" was the popular slogan that led Polk to victory against all odds. -
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. -
War e/ Mexico
A war between the U.S. and Mexico spanned the period from spring 1846 to fall 1847. The war was initiated by the United States and resulted in Mexico's defeat and the loss of approximately half of its national territory in the north.