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Air conditioning (or rather the sort of basic version of it) had been long invented before but it became commercially available in homes in 1932.
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Developed by the Ford Motor Company for the purpose of building cars, now widely used in factories everywhere in order to make production more efficiently.
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Flight was something that people always wanted to acheive and flying commercially became possible in this year.
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The peak of modern medicine saved many lives with the supposed "miracle" drug.
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Something that people use every day to write with. Still important even to this day.
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First developed by the Department of Defense would later become commercially availsble to the public snd change the way our world would communicate.
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Smoke detectors had been invented prior but this one was the type that could be put into homes.
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Made computation a whole lot easier.
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Computers had once again been invented prior but once again, became commercially available in homes in the 70's.
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Revolutionized the way that crimes were solved.