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Missouri Compromise
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Texas entered The Union as a Slave State
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War with Mexico begins
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US settles dispute with Britain over Oregon
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The Treaty of Guadalupe Hidalgo
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The breakdown of The Compromise of 1850
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Kansas – Nebraska Act & Bleeding Kansas
Up to 1961 -
Formation of the Republican Party
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Dred Scott's Case
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The raid on Harpers Ferry
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Abraham Lincoln elected as president
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Union between South Carolina and the states of US is dissolved
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Four more states join The Confederacy
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Six other states secede from the US
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The Confederacy is established
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Lincoln's Inauguration