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The Japanese bombed Pearl Harbor, Hawaii. They also attacked the Philippines, Wake Island, Guam, Malaya, Thailand, Shanghai, and Midway.
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The United States and Britain declare war on Japan. Japanese land near Singapore and enter Thailand.
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Japanese invade the Philippines and also seize Guam.
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Manila and U.S. Naval base at Cavite captured by the Japanese.
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Largest Japanese air raid since Pearl Harbor occurs against Darwin, Australia; Japanese invade Bali.
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Full Allied assault on New Britain as 1st Division Marines invade Cape Gloucester.