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  United States wins war with Mexico, Texas becomes a state. By adding a state, south becomes stronger.
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  US goes to war with Mexico
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  Slave trade banned in D.C., popular sovereignty. California free; North and South stay balanced.
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  Dred Scott does not gain his freedom, even after living in a free state
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  Lincoln becomes president; He represents freeing the slaves
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  North/Union held up in fort; South/Confederacy forces them to surrender
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  Union winning, but Confederates rally to victory
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  Between Monitor and Merrimack
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  Union victory by Ulysses S. Grant in Tennessee
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  bloodiest battle/day in 'Murica; standoff
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  prelude to Gettysburg; Hooker vs. Lee; Confederates won
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  shot by his own men, amputate arm, gets pneumonia...kaput
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