This refers to the great depression so the answer is D. I hope this helps
A. is a duty of congress. They can say a law is unconstitutional based in their views on the law but they cant declare one unconstitutional. But the President can declare a law unconstitutional and change it.
These societies arose from a blend of old populations familiar with the environment and new immigrants with fresh skills to impart.
The answer is b and it is shown by What they said
