>>>The most productive decades in the US correspond with its highest relative tax rates, between the fifties and the eighties. The most productive decades in t

>>>The most productive decades in the US correspond with its highest relative tax rates, between the fifties and the eighties. The most productive decades in the US also correspond with a period when the US was essentially the only industrial power not absolutely shattered by World War 2. In global economic terms, the post-war period was a huge anomaly, and I would be hesitant to tie too many conclusions/correlative effects to something as singular as domestic tax policy.