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The cotton gin was created by Eli Whitney. The invention increased slaves.
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Lewis and Clark explored the west of what would eventually become America.
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Large textile mills are built in Lowell, Massachusetts.
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The Trail of Tears was the removal of the Cherokeee Indians enforced by Andrew Jackson.
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Gold is found at Sutter's mill. Although the owner tries to keep it quiet, it ends up getting out and AMericans flood the west.
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The treaty ended the Mexican-AMerican war in favor of the United States.