Why were the policies of the hoover administration ineffective in dealing with the problems of the depression?

The correct answer to this open question is the following.

President’s Hoover policies to the Great Depression were ineffective and failed because they were based on protectionism.

Hoover allowed the government to intervene in the economy raising the tariffs of the imports. The tariffs were so high on foreign products. Those countries affected by the Roosevelt decision did the same as a counter-measure, affecting the economy of the United States. Excessive government intervention made Roosevelt’s response to the Great Depression fail.

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