Answer :
Final answer:
The Clean Air Act of 1963 was the initial U.S. air pollution act, later strengthened in 1970, leading to the formation of the EPA and significant pollution reduction.
Explanation:
The first United States air pollution act aimed at reducing air pollution was the Clean Air Act of 1963. This act paved the way for stronger regulations in 1970 and the creation of the Environmental Protection Agency (EPA). The Clean Air Act of 1970 set national standards for controlling pollutants and has been instrumental in reducing harmful emissions.
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