Many card-carrying Republicans here say FDR prolonged the Great Depression. How? Federal government spending was 10% of GDP in 1940, even with war build-up. And to those Republican here who say WWII got us out of the Great Depression; you are Keynesians my dear friends.
Please check out; http://www.usgovernmentspending.com/year1940_0.html#usgs302
Change the second column to "percent GDP" and you will notice that federal spending is 10% of the Gross Domestic Product.