Which describes a change in a population that industrialize the us in the late 1800s

The growth of industries in America started in the earlier 1800s and continued all through to the civil wars. After the war was over, the industries in America had become small, and labor remained widely but limited the production of more products.

Many businesses operated in small companies because lacked enough capital to expand. The American industry changed drastically after the war due to the introduction of machines that replaced manual labor, thus increase production. Investors also improved and expanded their operations.

i thinl it is the 1st answer