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an attempt to seek a compromise and avert a crisis between North and South.
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10,000 mile of railroad track had been laid in the united states
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Democratic candidate Franklin Pierce becomes presiden in 1852
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united States bought more land from mexico
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Stephen Douglas and Abraham Lincoln hold a series of seven debates in Illinois while running for a U.S. Senate seat.
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Railroads carried 2 billion tons of freight a year
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John Brown launches a raid against the U.S. arsenal at Harper's Ferry.
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following a trial, abolitionist John Brown is hanged for treason. His death energizes many sympathizers in the North, and makes him a martyr.
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Lincoln gets elceted as president because of all the votes from the north.
