This industry was especially important to stimulating sustained industrial development in the United States because it was critical to many different economic sectors

Mineral industry

Explanation:

The most important industry in the American industrial development process is the mineral industry. In industrialization in general, the use of energy and mineral resources is essential.

The U.S. has a large diversity of mineral deposits, such as coal and iron, which are abundant. However, there is a dependence on petroleum due to the decrease in oil reserves and other minerals, making it the largest importer of minerals in the world.

We can see this because the U.S. is the nation that most consumes these resources. The proof of this is the American's cars, with their majority having powerful engines of 8, 10, and 12 cylinders, which consume much fuel.

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workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.