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Happy 4th of July!
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A machine that separates cotton fibers from seeds.
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Marks the start of the Civil War
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Abolished slavery and involuntary servitude, except as punishment for crime
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End of Civil War
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If you're born in the United States, you are a citizen and protected by law.
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No matter race or color, you can vote.
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It had been in the making since 1809, but Thomas Edison finished the working thing in 1880
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Pennsylvania Steel Company workers
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Involved railroad strikes in 27 states
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