Answer:
President Franklin Delano Roosevelt took Keynesian measures during his New Deal program, with the goal of reviving the economy of the United States, which had been severely damaged by the Great Depression.
Basically, Keynesianism advocated a considerable increase in public spending through infrastructure works and government programs to get out of the crisis, encouraging government participation in the economy, not to be a socialist regulator but to push through investment. publishes consumption and production. President Roosevelt adopted these policies due to the lack of capacity of the private sector to carry out the reforms that would allow a quick job recovery, given that many companies had failed and it was not possible to invest due to the lack of bank and labor guarantees.
Thanks to the application of Keynesianism, the Roosevelt government pushed down the unemployment rate, increasing production and reviving the economy, which would finish recovering with the start of World War II.