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Kansas-Nebraska act
A guy wanted to build a choo-choo train across America, so he asked if Nebraska could be a slave state. It was decided by popular sovereignty that they would be free. -
Raid on Harpers Ferry
An Abolitionist named John Brown led an elaborate raid on a weapons arsenal in Harpers Ferry, in then Virginia. Soldiers led by Robert E. Lee subdued the abolitionists. the survivors were hung.