The post-WWII order was deliberately designed by clever American politicians who realised they could leverage the untouched industrial base and built-up military capability to become a world superpower, in an alliance with Western Europe. All of these policies were and are 100% America First, because the US has always been the primary benefactor of it all, but they've been
marketed as some kind of benevolent altruistic goodwill-project that "leader of the free world" simply "has to do" because it's "the right thing".
Bullshit. It's naked greed all the way down. Exceptional? Exceptionally greedy more like it.