Many Americans were uneasy with big government, but they also wanted the government to help ordinary people. These programs helped, but they didn't solve the economic problems. The next world war would do that. The United States remained neutral while Germany, Italy and Japan attacked other countries. Although many people wished to stay out of these conflicts, congress voted to draft soldiers and began to strengthen the military. As Japan conquered territories in China and elsewhere in Asia, it threatened to seize raw materials used by Western industries. In response, the United States refused to sell oil to Japan. Japan received 80% of its oil from the United States. When the United States demanded that Japan withdraw from its conquered territories, Japan refused. On December 7, 1941, Japan attacked the American fleet at Pearl Harbor, Hawaii. The United States declared war on Japan. Because Germany and Italy were allies of Japan, they declared war on America.