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The Louisiana Purchase was the acquisition of the Louisiana territory (828,000 square miles) by the United States from France in 1803
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The 2,200-mile east-west trail served as a critical transportation route for emigrants traveling from Missouri to Oregon and other points west during the mid-1800s
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The War of 1812 was a military conflict, lasting for two-and-a-half years, fought by the United States of America against the United Kingdom of Great Britain and Ireland, its North American colonies, and its American Indian allies.
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The Santa Fe Trail was a 19th-century transportation route through central North America that connected Franklin, Missouri with Santa Fe, New Mexico
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The Mormon Trail or Mormon Pioneer Trail is the 1,300-mile route that members of The Church of Jesus Christ of Latter-day Saints traveled from 1846 to 1868.
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The Mexican–American War was an armed conflict between the United States and the Centralist Republic of Mexico from 1846 to 1848.
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The California Gold Rush began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California.
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Senator Henry Clay introduced a series of resolutions on January 29, 1850, in an attempt to seek a compromise and avert a crisis between North and South.
