How did the Second Industrial Revolution affect the United States?

o It lessened the demand for additional national defense,

The United States began to concentrate on expanding outside the continent.

It increased the demand for raw materials.

It increased the demand for raw materials.

Explanation:

In the 19th century, the Second Industrial Revolution began, which spread across Europe, the United States, and Japan. The Second Industrial Revolution is marked by several characteristics because it is an important historical moment for the development of the industry, technological advances and increased productivity. In the case of the United States, we witness an increased development, especially the search for raw materials to supply the industrial demand.