how did the us foreign policy change during ww2
History of United States foreign policy The same pattern which emerged with the first world war continued with the second: warring European powers, blockades, official U.S. neutrality but this time President Roosevelt tried to avoid all of Wilson's mistakes. American policy substantially favored Britain and its allies, and the U.S. getting caught up in the war. Unlike the loans in World War I, the United States made large-scale grants of military and economic aid to the Allies through Lend-Lease. Industries greatly expanded to produce war materials. The United States officially entered World War II against Germany, Japan, and Italy in December 1941, following the Japanese surprise attack on Pearl Harbor. This time the U.S. was a full-fledged member of the Allies of World War II, not just an "associate" as in the first war. During the war, the U.S. conducted military operations on both the Atlantic and Pacific fronts. After the war and devastation of its European and Asian rivals, the United States found itself in a uniquely powerful position due to the lack of damage to its domestic industries.