Multiple choice Why did Japan ultimately decide to go to war with the United States? The United States cut off their exports to Japan. Japan was angry at the United States for supporting France. The United States threatened to attack Tokyo. All of these Reveal answer Fill a bubble to check yourself A Correct answer Explanation The United States imposed severe economic sanctions, including an oil embargo and the freezing of Japanese assets, in response to Japanese aggression in China and Indochina, which crippled Japan's economy.