Presumably a reference to this: https://en.wikipedia.org/wiki/Bretton_Woods_system https://en.wikipedia.org/wiki/Bretton_Woods_system > On 15 August 1971, the

Presumably a reference to this: https://en.wikipedia.org/wiki/Bretton_Woods_system https://en.wikipedia.org/wiki/Bretton_Woods_system > On 15 August 1971, the United States "temporarily" suspended the convertibility of the US dollar to gold, effectively bringing the Bretton Woods system to an end and rendering the dollar a fiat currency.