As American industry expanded in the late nineteenth century,its energy source shifted from

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American industry shifted its energy source from water to coal in the late nineteenth century as coal became more accessible and efficient for powering industrial machines. Steam power also became more prevalent during this time as a result of the increased use of coal. However, electricity did not become a significant energy source until the early twentieth century. Iron was used primarily as a material for manufacturing, rather than an energy source.

As American Industry Expanded in the Late Nineteenth Century,its Energy