The correct statements are:
- It entered into an alliance with Germany and Italy.
- It occupied French Indochina.
- It invaded China to gain control.
The Empire of Japan entered the Second World War by launching a surprise offensive that began with the attack on Pearl Harbor at 7:48 a.m. Hawaiian time (18:18 GMT) on December 7, 1941. Within seven hours there were coordinated Japanese attacks against the Philippines, Guam and Wake Island, then controlled by the United States, in addition to other attacks on the Empire. British in Malaya, Singapore and Hong Kong. The strategic objectives of the offensive were to paralyze the US fleet in the Pacific, capture oil fields in the Dutch East Indies and expand the boundaries of the Japanese Empire to create a formidable defensive perimeter around the newly acquired territory.
The Imperial Japanese Navy made its surprise attack on Pearl Harbor, Oahu, Hawaii Territory, on Sunday, December 7, 1941 in the morning. The Pacific Fleet of the United States Navy and its defenders Air Forces of the Army and Air Forces of the Navy suffered significant losses. The main objective of the attack was to incapacitate the United States long enough for Japan to establish its long-planned Southeast Asian empire and defensible buffer zones. However, as Admiral Yamamoto feared, the attack caused little lasting damage to the United States Navy, with priority objectives such as the carriers of the Pacific Fleet at sea, and the vital coastal installations, whose destruction could have paralyzed the fleet alone, were ignored. The Americans saw the attack as a treacherous act and united against the Empire of Japan. The United States entered the European Theater and the Pacific War with full force. Four days later, Adolf Hitler, of Germany, and Benito Mussolini, of Italy, declared war on the United States, merging the conflicts, but at the same time being separated. After the attack on Pearl Harbor, the Japanese launched offensives against Allied forces in East Asia and Southeast Asia, with simultaneous attacks against Hong Kong, British Malaysia and the Philippines.