No, America has never recovered from the disasters of the Roosevelt era. It's been all downhill since 1945.
You mean so coming out of World War II as the world's most powerful, feared and respected nation and knowing economic prosperity for over nearly 30 years was a bad thing?
You mean coming out as a centralized, fascistic warmongering state dominated by the military-industrial complex, experiencing a rapid decline in individual rights and freedoms, and massive growth in government and corporate power, engineered by the Federal Reserve and an unstable artificial economic system?
