The US was living beyond its means throughout the entire time, subsidized by the other members of that system. The end of the Bretton Woods system affirmed that.
How it ended? by Nixon preventing a bank run on the system because he didn't have the equivalent gold for all the currency he issued.
The US was clever enough to use its economic advantage to invest in its military to a point in which that move could be tolerated by the rest of the countries.
Any further replies from you will be read out loud in chicken voice.