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In 1820 a rule was made saying that states should join the United States in pairs of two one free, one slave. to keep things fair. Missouri wanted to be a state, and this rule helped decide if it would allow slavery.

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When some states wanted to join the U.S. they argued about whether they should allow slavery. In 1850 a group of politicians made a deal to keep a balance – some states could have slaves, and some couldn't.

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In 1850, a new law said that if someone escaped from a slave state to a free state, the free state had to send them back. It made people upset because it forced them to help catch and return runaway slaves.

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In 1852, a lady named Harriet Beecher Stowe wrote a book called "Uncle Tom's Cabin." It told stories about the sad lives of slaves and made many people in the North angry about slavery.

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In 1854, lawmakers made a law saying people in new territories could decide if they wanted slavery or not. This made a lot of people upset because it broke an earlier rule, and it led to a big mess in places like Kansas, where people fought over whether to allow slavery.

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People in Kansas couldn't agree on whether to allow slavery. This led to fights and arguments, and it got so bad that some people called it "Bleeding Kansas."

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In 1856, a senator named Charles Sumner gave a speech against slavery. Another senator got mad and hit him with a cane. It showed how tensions were rising between people who supported and opposed slavery.

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In 1857, a man named Dred Scott(a slave) wanted to be free because he had lived in a free state. The Supreme Court said no, deciding that enslaved people were property, not citizens. This upset a lot of people on both sides.

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In 1859, a man named John Brown tried to start a rebellion against slavery. He and his followers attacked a place in Virginia hoping to free slaves, but it didn't work. This event increased tensions between the North and the South.

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In 1860, the country voted for a new leader. Abraham Lincoln won, but some people in the South didn't like it. They were worried he might want to end slavery, and this disagreement contributed to more problems.

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Creation of the Confederate States of America (1861)

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Creation of the Confederate States of America (1861)

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After Lincoln won the election, some Southern states decided they didn't want to be part of the United States anymore. They formed their own club called the Confederate States of America, and this decision eventually led to the Civil War.