@yogthos America got rich postwwtwice rebuilding eu, japan etc. It had sustained no real infrastructure damage and had massive economic advantage. Japan had been reduced to making toys and novelty items for US children, for example. I remember some for sale at the Brooklyn Museum of Natural History as a child even in early 60s. The whole petro infrastucture of e eu was destroyed by allied bombing etc
America squandered it in the manner eisenhower presciently described; and now it's about gone.