The Treaty of Versailles was in effect. <span>The US was in a position of Neutrality in European affairs. </span> <span>Once the Axis Powers were formed, German-Japanese Alliance, all treaties were nullified. </span> <span>Then one of The Axis Powers attacked a US Navy Base in Hawaii, it was on like donkey-kong after that. </span> <span>Wars are messed up (Credit to google)</span>