How did technology develop during the second industrial revolution? A) Technology developed through a few people working in isolation.

B) Technology was developed by the U. S. government.

C) Technology developed in systems of interdependent parts.

C) Technology was developed haphazardly.

A synergy between iron and steel, railroads and coal developed at the beginning of the Second Industrial Revolution. Railroads allowed cheap transportation of materials and products, which in turn led to cheap rails to build more roads. Railroads also benefited from cheap coal for their steam locomotives.

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d is the correct answer