Intro to World War II
After World War I, Europe was unstable. Fascists led by Benito Mussolini seized power in Italy, and Adolf Hitler and the Nazis took control of Germany. Meanwhile, Japan expanded its territory in Asia. As the Nazis gained power, World War II began. The United States clung to neutrality until Japan attacked Pearl Harbor. In the years following World War I, aggressive and expansionist governments took power in both Europe and Asia.