Which President’s administration dealt with the onset of the Great Depression?

The administration that dealt with the onset of the Great Depression was Herbert Hoover's. When the stock market crashed in October 1929, it marked the beginning of a severe economic downturn that would last through the early 1930s. Hoover was President at that time, having taken office in March 1929. His response to the crisis included attempts to use voluntary measures to support the economy and limited government intervention, based on his belief in individualism and self-reliance.

While Franklin Roosevelt is often associated with the Great Depression due to his New Deal programs aimed at recovery, it was Hoover's policies and the initial handling of the crisis that occurred at the onset of the economic troubles. Other Presidents listed, such as Theodore Roosevelt and Woodrow Wilson, were not in office during this period and thus were unrelated to the onset of the Great Depression.