Answer:
During the first 3 years of the war, from 1939 until the Japanese attack on Pearl Harbor in 1941, the United States maintained a policy of neutrality regarding the conflict.
Both its politicians and society considered that it was a European war, with no relation to American interests and the tranquility of its people. While the Franklin Roosevelt government sympathized with the allies and their cause, they did not get involved militarily in the conflict, but through commercial and logistic concessions to countries such as Britain and France.
