Because that’s just the way it is
If you mean the United States, the answer is non of the above.
If you mean the United States Citizens, the answer is A, B, and C.
The answer to this question is number 2
Answer:
world saw a major increase in population
Explanation: The Industrial Revolution impacted the environment. The world saw a major increase in population, which, along with an increase in living standards, led to the depletion of natural resources. The use of chemicals and fuel in factories resulted in increased air and water pollution and an increased use of fossil fuels.