The enactment of the Clean Air Act of 1970<span> (</span>1970<span> CAA) resulted in a major shift in the federal government's role in </span>air<span> pollution control. This legislation authorized the development of comprehensive federal and state regulations to limit emissions from both stationary (industrial) sources and mobile sources</span>
1930s The Great Depression
The right answer for the question that is being asked and shown above is that: "d. government officials." Civil war broke out in Nigeria because of conflict between d. government officials. Civil wars are wars that happened within the community.
People no longer trusted the stock market much less the bank. Banks began to shut down because people began taking their money out of them after the crash so borrowed money couldn't be repaid. People couldn't be paid or they'd get fired so many many people lost their homes and businesses thus the after affect of the great depression towards the south. I don't know much about it but I hope this helps.