jordonhollingsworth7 jordonhollingsworth7
  • 25-06-2021
  • History
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The question was: Before factories developed, machinery was powered by?
A. Use of internal combustion engines
B. The steam engine
C. Electrical power
D. Using their muscles

Respuesta :

drew2497 drew2497
  • 25-06-2021
the answer is d. using their muscles
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