[Versailles was France’s revenge for losing the Franco-Prussian War.]
The first Versailles involved a hefty reparations bill bigger, relative to France’s economy, than the second (post-WWI) vis-a-vis Germany’s. But Keynes just had to advance his gormless pet theory. The real problem is the Germany lost WWI, but the West’s victory wasn’t pressed to the point of taking Berlin. That was remedied at the end of WWII, by killing Germans until they were sick of death. Germany’s losses were maybe 1/4 of the deaths suffered by the Allies in WWII, but it was enough for Germany to cry uncle. And in the postwar period, they got the consolation prize of realizing Hitler’s dream - the EU is the Fourth Empire in all but name, and Germany got it going without firing a single shot.