More hard work and a feeling of individualism were the change experienced by the people of the world during the Great Depression.
The collpase of the stock market in 1929 caused a High rate of unemployment, High rate homelessness, collapse of international trade. High rate of deflation etc
Thus, the hardship plunged people into hard work and a feeling of individualism because they are left to cater for the,mselves withy little government intervention.
Therefore, the Option D is correct.
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