American Isolationism during World War II. By John . American Isolationism. Who started the isolationism in American? Who was involved? What were the effects of isolation? Where did most of the major events happen? Why did American support isolation?
The experience of World War II changed American attitudes toward isolationism. The United States recognized that to be safe it needed allies. As a result, the country’s postwar policy was based on international cooperation and collective security.
Most of the decisions about isolationism came in the United States and Europe