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Kansas-Nebraska Act
Kansas-Nebraska Act is passed.
https://en.wikipedia.org/wiki/Kansas%E2%80%93Nebraska_Act -
Bleeding Kansas
Series of conflicts between anti-slavery and pro-slavery people.
https://en.wikipedia.org/wiki/Bleeding_Kansas -
President James Buchanan
President Buchanan vows to handle slavery issue.
https://en.wikipedia.org/wiki/United_States_presidential_election,_1856 -
Dred Scott Decision
Ruling said that African Americans could not be citizens and defined slaves as property.
https://en.wikipedia.org/wiki/Dred_Scott_v._Sandford -
Lincoln-Douglas Debates
Abraham Lincoln and Stephen Douglas debated slavery in the United States.
https://en.wikipedia.org/wiki/Lincoln%E2%80%93Douglas_debates