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Uncle Tom's Cabin
The novel showed the life of slaves. The southerners thought it was exagerated story and the northerners began to aware of the the situation and pushed more for abolition. https://en.wikipedia.org/wiki/Uncle_Tom%27s_Cabin -
Kansas Nebraska Act
This act allowed slavery in all areas because of popular sovereignty. And it splits northern democrats and whigs into two parties. -
"Bleeding Kansas"
"Bleeding Kansas" started over northerners and southerners trying to convince the other side of their opinion on slavery for popular sovereinity by attacking and killing. https://en.wikipedia.org/wiki/Bleeding_Kansas -
John Brown's Raid
The southerners became scared of the slavery because the northerners provided guns and knives to them. -
Abraham Lincoln's Election
Lincoln was an anti-slavery Republican who won the presidency. And the southerners thought they would face the destruction and lost their power.https://en.wikipedia.org/wiki/United_States_presidential_election,_1860
