What was most commonly listed as a cause of the Great Depression

The stock market crash of 1929 touched off a chain of events that plunged the United States into its longest, deepest economic crisis of its history. It is far too simplistic to view the stock market crash as the single cause of the Great Depression. A healthy economy can recover from such a contraction.

Explanation:

Stock prices had been too tightly controlled by the government.

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roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.