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Telephone
Telephone Alexander Graham Bell spread communication across wide areas -
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Automobile
Karl Benz increased personal mobility and freedom -
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Radio and Television
Radio and Television Guglielmo Marconi & John Baird made the world smaller -
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Airplane
Airplane Orville and Wilbur Wright allowed people and products to quickly move -
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Computer
Computer John Atanasoff, et al. transformed business world; predecessor to the Internet