VUS Antebellum Period and Expansion

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Louisiana Territory

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1803 -Doubled the size of the United States under Jefferson

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Monroe Doctrine

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1823 - the Western Hemisphere was no longer open for further European colonization and that any such attempt would be considered an act of war on the US

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Mexican War

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1840s - border dispute over Texas led to the US gaining around half of Mexico's territory

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Treaty of Guadalupe Hidalgo

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Ended the Mexican-American War

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War of 1812

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Conflict between the United States and the United Kingdom over US maritime rights

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Hartford Convention

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Series of meetings in 1814-1815 in New England

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Market revolution

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Economic transformation in the 19th century

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American System

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Economic plan that played a prominent role in American policy

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Age of the Common Man

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Jacksonian Era

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Missouri Compromise

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1820 - admitted Missouri as a slave state and Maine as a free state- planned for future state admissions for free and slave states