The cotton gin increased cotton processing efficiency.
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Some people experience time slowing during emergencies.
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In 1947, the Roswell incident sparked decades of speculation about extraterrestrial life.
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There are deeper mysteries.
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In 1692, the Salem witch trials led to the execution of several individuals in Massachusetts.
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The 26th Amendment lowered the voting age to 18.
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In 1971, a hijacker known as D.B. Cooper parachuted from a plane and was never conclusively identified.
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The Wright brothers achieved powered flight in 1903.
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A walrus uses its tusks to haul itself onto ice.
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