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The Lewis and Clark's expedition begins.
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The United States had victory over the Shawnee Indians. This ended the threat of there being an Indian confederation.
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The War of 1812 was between Britain and the United States and started because the U.S. could not expand any more west because of Britain.
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This was against Mexico started because America was trying to gain California but was unable to because of Mexico.
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Gold was first discovered in California.
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Abraham Lincoln was elected as president during the time of the Civil War.
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South Carolina is the first state to secede.
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The Civil War begins because of disagreements over slavery.