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530,000,000 acres of territory in North America that the United States purchased from France
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Baltimore & Ohio Railroad was the first U.S. railway for commercial transport of passengers
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Authorizing the president to grant unsettled lands west of the Mississippi in exchange for Indian lands within existing state borders.
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Mexico and United stated began fought against each other
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James W. Marshall found gold on his piece of land
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Abraham Lincoln becomes the 16th President
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Disagreement over the institution of slavery
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US congress passed the thirteenth amendment
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20th President was shot
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Conflict between Spain and United States