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Whitney's cotton gin transforms southnern economy.
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Gabriel slave rebellion in Virginia.
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Congress outlaws slave trade.
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American Colonization formed.
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Missouri Compromise
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Vesey slave rebellion in Charleston, South Carolina.
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Republic of Liberia established in Africa.
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Walker publishes Appeal to the the Colored Citizens of the World.
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Nat Turner slave rebellion in Virginia; Garrison begins publishing The Liberator.
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Virginia legislature debates slavery and emancipation.
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British abolish slavery in West Indies; American Anti-Slavery society founded.
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Abolitionist students expelled from Lane Theological Seminary.
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U.S. Postal Office orders destruction of abolitionist mail; "Broadcloth Mob" attacks Garrison.
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House of Representatives passed "Gag Resolution."
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Mob kills abolitionist Lovejoy in Alton, Illinois.
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Canadian rebellion and Caroline insident.
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Weld publishes "American Slavery as it is."
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Anti-slavery Liberty party organized.
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Harrison dies after four weeks in office; Tyler assumes presidency.
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Aroostook War over Maine boundary; Webster-Ashborn treaty.
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Polk defeats Caly in "Manifest Destiny" Election.
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Caleb Cushing signs Treaty of Washington with China.
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Douglass publishes "Narrative of the Life of Frederick Douglass."
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United States annexes Texas.
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Walker Tariff; Independent Treasury restored; and U.S. settles Oregon dispute with Britain.
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U.S. and Mexico clash over Texas boundary; Kearny takes Santa Fe; Fremont conquers California; and Wilmot Proviso passes House of Representatives.
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Mexican War (1846-1848).
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Battle of Buena Vista; Scott takes Mexico City.
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Free Soil Party organized.
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Treaty of Guadalupe Hidalgo (Treaty between Mexico and U.S.).
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Treaty of Guadalupe Hidalgo ends Mexican War; Taylor defeast Cass and Van Buren for Presidency.
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California Gold Rush
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Fillmore assumes presidency after Taylor's death; Compromise of 1850, including Fugtive Slave Law; and Clayton-Bulwer Treaty with Britain.
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Pierce defeats Scott for Presidency.
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Gadsden Purchase from Mexico.
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Commodore Perry opens Japan for American Trade; Ostend Manifesto proposes seizure of Cuba; Kansa-Nebraska Act; and Republican Party organized.
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William Walker becomes president of Nicaragua and legalizes slavery.