The stock market crash and the Great Depression are often blamed solely on Hoover. Obviously he is not the sole reason for the crash. What did previous administrations like Harding and Coolidge do that had an impact on the economy?

A reminder to people considering answering this question: our rules specify that answers must be "in-depth, comprehensive, accurate, and based off of good quality sources."

Simply noting that most commentators do place some blame on Coolidge's feet is not an adequate response. Please elaborate by providing an in-depth explanation of Coolidge's contribution.