What factors contributed to the growth of monopolies before the civil war?

The growth of corporations leads to the growth of monopolies before the civil war.

Explanation:

These are some factors which contributed to the growth of monopolies before the civil war such as:

The speedy growth of industries.Various monopolies formed because corporations promote industrial growth.Railroads link the entire into a single national economic system. the factory system was increased.Mass production of interchangeable parts.Factories were built by corporations and not by individual Americans.