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1 January, 01:29

Successful attempts to make the internal combustion engine more efficient in the 19th century resulted in an increase in the demand for

A) coal

B) iron ore

C) petroleum

D) arable land

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Answers (2)
  1. 1 January, 01:36
    0
    That would be C) Petroleum.
  2. 1 January, 01:56
    0
    The answer to your question is C. petroleum
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