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5 September, 17:09

Which of the following was not a an important invention created at the turn of the 20th century

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Answers (2)
  1. 5 September, 17:26
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    Answer: radio

    Explanation:Radio was not an important invention in the early 20th century. Instead it was developed by Heinrich Hertz in the 18th century. The cotton gin (APEX)
  2. 5 September, 20:10
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    the cotton gin

    Explanation:

    apex
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