Answer:
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.
The correct answer to this open question is the following.
Although you forgot to attach the options for this question we can answer the following.
The three factors that contributed most to the rapid industrialization and urbanization of the United States were "Investment Capital, New Means of Transport, Large Labor Force."
The Industrial Revolution changed the life of the American people. Many factories and fabrics opened in the northern states of the United States. People from the rural areas decided to move to larger cities such as New York City or Chicago because there they could find jobs operating the new machines in the factories. Those jobs were low-paid jobs under unhealthy and risky conditions and workers had to work for long hours.
And the factors that contributed most to the rapid industrialization and urbanization of the United States were "Investment Capital, New Means of Transport, Large Labor Force."