USA was least affected by WWI, lost the least men and resources.
Many Americans were not keen on being involved in Europe
Woodrow Wilson was an idealist, who wanted to achieve world peace
Wilson was also concerned about democracy and self-determination
Wilson believed Germany should be punished, but not destroyed completely
Priority was his Fourteen Points: Free access to the seas for all in peace and wartime, Free trade, Disarmament, Self-determination for Eastern Europe and Setting up the League of Nations