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Thomas Newcomen invented the steam engine; used for generating energy through steam.
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James Hargreaves invents the spinning jenny; used for weaving.
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James Watt improved the steam engine.
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Eli Whitney invented the cotton gin; used for cotton separation.
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Samuel Morse invented the telegraph; used for communicating.
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Elias Howe invented the sewing machine; used for sewing.
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Louis Pasteur developed vaccines in order to cure diseases.
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Thomas Edison used a light bulb for a lamp.