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First United States CensusNearly 700,000 slaves live and toil in a nation of 3.9 million people.
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Fugitive Slave ActThe United States outlaws any efforts to impede the capture of runaway slaves.
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Article on Cotton GinThis invention creates a huge demand for slave labor.
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Compromise of 1820Slavery is forbidden in any subsequent territories north of latitude 36_30. Missouri is admitted as a slave state and Maine as a free.
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Southern states expel abolitionists and forbid the mailing of antislavery propaganda.
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Frederick Douglass NewspaperEscaped slave publishes the North Star.
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Harriett TubmanAfter fleeing slavery, she returns to the south 15 times to rescue other slaves.
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Compromise of 1850In exchange for California as a free state, northern congressmen accept a harsher Fugitive Slave Act.
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Uncle Tom's CabinNovel about the horrors of slavery sells 300,000 in one year.
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Abraham Lincoln1st Republican to win the United States Presidency.
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Emancipation ProclamationPresident Lincoln decrees that all slaves in Rebel territory are free.
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13th Amendment13th Amendment to the United States Constitution outlaws slavery.