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The 3630 line was created starting on the bottom of Missouri separating free states from slave states.

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A protective tariff was passed that put a tax on imports. And Vice President John C. Calhoun made it clear that he did not like it because it affected the south in a harmful way so he made it so if the law is harmful to a state then they can nullify the law.

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President Jackson made the "Force Bill" that forced SC to pay their dept.

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The U.S.A. gained California, Utah, Nevada, Arizona, and New Mexico from the country of Mexico.

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A fugitive slave law was passed that if a slave escapes the south the north can no longer protect them and they are not free from the plantation owners.

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Harriet Beecher Stone wrote a book "exaggerating" slavery. This increased the Norths sympathy for slaves.

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People in Kansas above the 36 30 line were free but below it were slaves. The transcontinental railroad was in need of southern support.

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The South rushed to Kansas to vote and while that happens there is a violent attack and many people die starting the republican party.

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The supreme court decided that slaves can not be taken and are property. Slaves can not be transported anywhere in the US.

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White abolitionist tried to get slaves to fight for a rebellion but they failed to get weapons.

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The north did not want slavery to expand into the new western territories. President Abraham Lincoln won the election.

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People believed that the federal govt. should not interfere with state's rights. The south feared that Lincoln would outlaw slavery.