The United States Enters the War | The Second World War
Although the United States had a strong isolationist element and some Nazi sympathizers, American opinion had, from the very beginning of the attack on Poland in 1939, been far more nearly unanimous against the Germans and Italians than it had been against the Central Powers in 1914. With the fall of France in 1940, anti-Axis sentiment grew stronger, reinforced by a growing belief that if Hitler won in Europe, the United States would be his next victim.