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Which of the following was not an important invention of the early 20th

century?

a. cotton hun
b. airplane
c. phonograph
d. lightbulb

User John Mills
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2 Answers

7 votes

phonograph

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User Lorenzo Baracchi
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3 votes

Answer:

a. the cotton gin

Step-by-step explanation:

It was made in the 18th century.

User Tetedp
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