> simply because the rest of the planet was beat down. Or, also, because your currency was established by treaty to be the de-facto means of exchange to stabil

> simply because the rest of the planet was beat down. Or, also, because your currency was established by treaty to be the de-facto means of exchange to stabilize the postwar economy and then later became the defacto means of procuring energy security so that all countries would be enticed to trade with you in order to obtain some of it. Plus NATO cold war defense against commies. .. but that might poke a hole in the whole notion of an 'extreme capitalist model' (if one means this in the smithian free market sense)