They transformed peacetime industries into war industries.
Hope this helps. :)
It allowed the transportation of goods to be more efficient and quicker
The answer to this question will be
C.
outsourcing labor
Yes, it is true that ground <span>fighting in the Pacific was led by the United States marines, since these soldiers were almost always deployed via ships, as opposed to other more land-based means. </span>
A factor that led to the growth of the factory system in the United States was the development of new power sources, it's true.