Question

The U.S. coal mining industry expanded in the 1800s largely because coal was needed to power

A.
agricultural equipment.

B.
telegraph lines.

C.
faster locomotives.

D.
logging machinery.

Answer 1

The U.S. coal mining industry expanded in the 1800s largely because coal was needed to power **C. faster locomotives.** Railroads and locomotives were significant consumers of coal, driving demand for the resource during that period.