The expansion of the rail networks led to
a growth in the steel industry.
a growth in the oil industry.
a decline in the coal industry.
a decline in the meatpacking industry.

The expansion of the rail networks led to a growth in the steel industry. Option A is correct.

Since the construction of the railroad network required a large amount of steel, specially for the rails, in addition to the fact that steel was also a vital component of the locomotives, the expansion of the rail networks needed further steel, so that it marked the growth in the steel industry.

The railroad expansion of the middle and late 1800s changed America forever.

fair labor standards act

explanation:

the correct answer is d