He did so because he wanted revenge on France and England for winning the first war. He was a young soldier in the WWI and felt that Germany was shamed after the war. So he started the second to gain respect back and to prove that their country was also a great superpower. He believed in racial purification and wanted to take over Europe and remodel it the way he wanted.
Well, this is quite subjective. The National Industrial Recovery Act allowed the president to regulate industry in an effort to stabilize prices. However, in 1935, it was declared unconstitutional and repealed. Had it survived, it probably would've been quite effective.
The Indians? Or this is a very confusing question.
People would be in danger
