I wouldn't bet on the US's longevity. Read Peter Turchin, War and Peace and War (discussed here a week or two ago), particularly noting his part about how multi

I wouldn't bet on the US's longevity. Read Peter Turchin, War and Peace and War (discussed here a week or two ago), particularly noting his part about how multiple imperial peoples can't coexist in a single country... The Fourth Turning -- on the patterns that generations tend to fall into -- might also be interesting.