The correct answer is letter D.
Explanation: Hoover adopted the behavior typical of a Keynesian textbook after the stock market crash. He immediately cut income tax rates by 1 percent (valid for fiscal year 1929) and began to increase federal spending by 42 percent between the 1930s and 1932 tax years.
Answer: Abrham lincoln
Explanation: learned of it :D
Ehm, Robert Fulton is best known for fully developing the first successful commercial steamboat.
Hope this helps ;p
