A recession became a depression when the Hoover Administration created high tariffs in 1930, and in 1932 raised the rate for upper-level income earners to over 60%. An inconvenient truth big-government interventionalists want you to ignore.
Another thing you won’t read from the politically correct history books is that FDR’s policies were just bigger versions of Hoover’s, and instead of ending the depression, lengthened it by about 7-8 years.