On the eve of the Civil War, __________ power was more important than _____________ power, but by the end of the 19^th century, 90 percent of manufacturing energy came from _________.

Question

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On the eve of the Civil War, water power was more important than steam power. By the end of the 19th century, coal had become the dominant source of energy for manufacturing, providing 90 percent of the energy.

On the Eve of the Civil War, __________ Power Was