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On October 20th, 1803, the Louisiana Territory is purchased by Thomas Jefferson from France. This doubles the nation's size.
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On May 14th, 1803, the Lewis and Clark expedition begins, sponsored by Thomas Jefferson.
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The War of 1812 begins on June 18th, 1812. This establishes us as a nation to Great Britain.
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The Oregon Trail was first majorly migrated in 1843.
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The Mexican American War officially started on April 25th, 1846.
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On Janurary 24th, 1848, gold nuggets were discovered in Sacramento Valley, California. The following year, the "Gold Rush" happened.
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The Treaty of Guadalupe-Hidalgo is signed on Feburary 2nd, 1848, officially putting an end to the Mexican-American War.
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On Janurary 29th, 1850, the Compromise of 1850, proposed by Henry Clay was passed, which decided on slavery and where it was allowed.
