Who was the economist whose ideas provided a theoretical justification of the New Deal?

1. Henry Morgenthau

2. Harold Ickes

3. Milton Friedman

4. Arthur Laffer

5. John Maynard Keynes

Out of all of them the only economists are Jogn Maynard Keynes and Arthur Laffer..

Miss sue could you check previous posts I posted a reply.

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The economist whose ideas provided a theoretical justification of the New Deal is John Maynard Keynes. To arrive at this answer, let's briefly discuss each of the options you mentioned:

1. Henry Morgenthau: Although he was the U.S. Secretary of the Treasury during the New Deal era, he was not an economist.

2. Harold Ickes: He served as the U.S. Secretary of the Interior during the New Deal, but he was not an economist.

3. Milton Friedman: While he was a prominent economist, he did not contribute to the theoretical justification of the New Deal. In fact, he was critical of many policies associated with it.

4. Arthur Laffer: Laffer's economic theories, specifically the Laffer Curve, gained prominence in the 1980s and were not directly related to the New Deal.

5. John Maynard Keynes: Known as one of the most influential economists of the 20th century, Keynesian economics provided the theoretical foundation for the New Deal. His ideas emphasized government intervention, increased public spending, and monetary policies to combat economic downturns.

Therefore, the correct answer to your question is option 5, John Maynard Keynes.