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Eli Whitney invented the cotton gin.
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Alessandro Volta invented the electric battery.
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Alexander Graham Bell invented the telephone.
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Thomas Edison invented the phonograph.
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Thomas Edison invented the incandescent lightbulb.
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Thomas Edison invented the electric generating plant.
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Gottlieb Daimler invented the internal-combustion engine.
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Guglielmo Marconi invented the radio.
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Orville Wright invented the airplane.
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Henry Ford invented the assembly line.