Answer:
c
Explanation:
it has one of the world's best and largest economy abilities.
The Mayans
Explanation:
there are a lot more ancient than the Aztecs and the olmecs
The enactment of the Clean Air Act of 1970 (1970 CAA) resulted in a major shift in the federal government's role in air pollution control. This legislation authorized the development of comprehensive federal and state regulations to limit emissions from both stationary (industrial) sources and mobile sources.
