American and domestic foreign policy during World War 2 were linked in that once America entered the war it had a significant impact on its economy. ... It was Hitler who declared war on the USA. Prior to that American domestic politics were dominated by the arguments between interventionism and isolationism.
President Woodrow Wilson <span>proposed the League of Nations because he wanted to make it far more difficult for a world conflict like World War I to take place again--by encouraging cooperation between European states instead of rivalries. </span>
WWII started on September 1, 1939 when Germany invaded Poland.
