The Paris Peace Conference in 1919 was to settle the terms for the end of WW I.
Wilson US, Clemenceau France, Lloyd George UK led the conference.
By the end of it, the Germans were forced to accept these terrible terms whereby Germany gave up big chunks of Germany, gave up all German colonies like Namibia, and Germany was forced to pay these reparations a lot of it to France.
These conditions essentially guaranteed the Germans would go into ear again.
No country was going to tolerate paying such high reparations to other countries at the expense of their own people for long without rebelling.
The Germans initially REFUSED to sign such a suicidal deal, leading to those officials losing power.
The replacing German government signed the bad deal after talking to the German military who told them the German military were not in a position to fight another long sustained war there and then.
Going forward to post WW II, basically America saved Europe after WW II by bringing in the Marshal Aid with hugs amounts of aid sent to help Europe rebuild, so helping Europe to avoid demand huge reparations from Germany again.
Europe owes a lot to America.
The problem with the Treaty of Versailles was that it tried to compromise an either, or, situation. It was far too harsh for the Germans to accept with good will, and not nearly harsh enough for them to resign themselves to it, as they did after WW2, under extraordinarily more harsh circumstances.