USA HISTORY

Detailed explanation-1: -Not only did the railroads transport raw materials used in industrial production, such as coal and iron ore, the railroads were also one of the largest consumers of raw materials in their own right. The growth of railroads thus led to growth in other industries, such as timber and coal.

Detailed explanation-2: -Railroads became a major industry, stimulating other heavy industries such as iron and steel production. These advances in travel and transport helped drive settlement in the western regions of North America and were integral to the nation’s industrialization.

Detailed explanation-3: -Old industries expanded and many new ones, including petroleum refining, steel manufacturing, and electrical power, emerged. Railroads expanded significantly, bringing even remote parts of the country into a national market economy. Industrial growth transformed American society.

Detailed explanation-4: -Industrialization, along with great strides in transportation, drove the growth of U.S. cities and a rapidly expanding market economy. It also shaped the development of a large working class in U.S. society, leading eventually to labor struggles and strikes led by working men and women.