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Louisiana Purchase
US agrees to pay France $15 million for the Louisiana territory -
War of 1812
US declares war on Britain over British interference with American maritime shipping and westward expansion -
Missouri Compromise
The effort to maintain balance between free and slave states -
Monroe Doctrine
President Monroe declares that American continents are off-limits to further colonization of European powers -
Articles of Confederation
Continental Congress adopts the Articles of Confederation, the first US constitution -
Indian Removal Act
Authorized forced removal of Native Americans living in the eastern part of the country lands west of the Mississippi River -
Texas
Texas declares it's independence from Mexico -
Mexican American War
US declares war on Mexico in it's efforts to gain California and other territories in the southwest
