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Americans had cracked one of the codes that he Japanese used in sending secret messages,
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Roosevelt cut off oil shipments to japan.
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American sailors at Pearl Harbor in Hawaii awoke to the roar of the explosives.
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An American fleet with Australian support intercepted a Japanese strike force headed for Port Moresby in New Guinea
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Japanese marched into the Philippine capital of Manila.
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The japanese reached Singapore, strategically located at the southern tip of Malay Peninsula.
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16 B-25 bombers under the command of Lieutenant Colonel James H. Doolittle bombed tokyo and several other japanese cities.
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American pilots destroyed 332 Japanese planes, all four aircraft carriers, and one support ship.
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Several thousand U.S. Marines, with Australian support landed on Guadalcanal and neighboring island of Tulagi.
