In America, there was a growing desire for the government to adopt a policy of isolation and leave Europe to its own devices. In failing health, Wilson wanted America to concentrate on itself and, despite developing the idea of a League of Nations, he wanted an American input into Europe to be kept to a minimum. He believed that Germany should be punished but in a way that would lead to European reconciliation as opposed to revenge.
This was peace treaties that followed World War I. The main thing to focus on with this treaty is that it managed to destroy the state of war between Germany and the Allied Powers. In this treaty, the Germans were forced to accept full responsibility for the war and disarm/pay reparations to countries.