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3 May, 17:15

The most important invention of the late 1900s and why?

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Answers (2)
  1. 3 May, 18:33
    0
    the escalator

    Explanation:

    because it allowed people who where tired from walking to rest while they were going up the steps
  2. 3 May, 18:56
    0
    There's a lot. here are some examples:

    Explanation:

    1901 : Vacuum cleaner.

    1902 : Air conditioning; automated tea maker.

    1903 : Electrocardiogram; first powered flight.

    1904 : Radar; tea bags; diodes.

    1905 : Plastic; windscreen wipers; silencer for guns.

    1906 : Radio broadcasting.

    1907 : Electric washing machine.
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