Which best explains the growth in the iron and steel industries after the u. s. civil war?

The US railroads rapidly expanded requiring massive amounts of metals.

Explanation:

work yay..other than that pretty good actually it hot though (≧▽≦)

a punishment or the threat of punishment used to enforce conformity. enforcement of norms or shared rules of conduct that tell people how to act in specific situations. social control. not everyone internalizes all of society's norms, and some people must be motivated by self-fulfillment.