The connection that the author draws between government and the Great Depression is: A. Despite his many efforts, Hoover was unable to undo the effects of Harding's and Coolidge's deregulation of financial practices.
According to the article, the roaring twenties spanned the period between the governments of Presidents, Harding, Coolidge, and Hoover. The governments of the first two were marked by poor financial decisions.
President Hoover who believed in certain economic principles was determined to turn the economy around but his efforts yielded no success.
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