The United States began to enter the war when the Japanese attacked the United States’ naval base, Pearl Harbor, in Hawaii. This established an international tension between the United States and Japan. Japan’s main objective was to take over lands throughout in East Asia so they would not have to depend western imports all the time. Tension between America and Japan rose when the Japanese army invaded and attempted to claim Manchuria in 1931. The Rape of Nanking also triggered the United States as it damaged the American’s economic interest in China. In response, the United States imposed economic sanctions against Japan and sent the Pacific Fleet to Pearl Harbor to defuse the situation which was later ambushed. At this point, the United
