The secular decline in post-war real economic growth rates (see chart) could explain the rise of the political and social issues facing America. Without the surplus generated by rapid growth, there's simply less to go around and many people suffer. When people suffer, they get angry and hostile.
Unfortunately, getting real growth back up isn't as simple as flicking the monetary switch. Prosperity is created when innovation generates productivity gains. And recent innovations simply haven't measured up to those achieved in the past.
Will future innovations be significant enough to make an impact? Or will they simply be drowned out by the relentless economic pressure caused by massive global debt and climate crises?