It changed the name of "The War to End All Wars" to "WWI".It also proved that you cannot be abusive or excessively harsh to a country when you were victorious in War or, they will act with hatred...
In ww1 there was a bloody stale mate in the battle fields of France, the war ended in Germanys crushing defeat, ww2 Germany was out numbered in troops but conquered France, 2/3s of russia, north...