Nixon’s reasons for doing so are well documented.27 As America’s competitors caught up in productivity terms, capital flowed out of the US into Europe, while its trade balance declined. By the late 1960s, with every country engaged in expansionary policies – with high state spending and low interest rates – America had become the big loser from Bretton Woods. It needed to pay for the Vietnam War and the welfare reforms of the late 1960s, but could not. It needed to devalue but could not, because to make that happen, other countries had to raise their own currencies against the dollar, and they refused. So Nixon acted.
The world moved from exchange rates fixed against the dollar and gold to totally free-floating currencies. From then on, the global banking system was effectively creating money out of nothing.