Depends on when you're talking about, imo post WW2 so much happened here because we survived the war pretty much entirely intact so our industry could continue

Depends on when you're talking about, imo post WW2 so much happened here because we survived the war pretty much entirely intact so our industry could continue to boom while the rest of the world rebuilt. That's always been my prevailing theory about the rabid success of the later half of the 20th century.