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Japan needed to buy time to consolidate its position and increase its naval strength by delivering a severe blow to the American morale.
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The United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan.
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Britain and the United States declared war on Japan.
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Hitler made a speech in the Reichstag three days after the United States declaration of war on the Empire of Japan. Basically Hitler explained his long time partnership with Japan and now Japan being apart of the Axis was offical.
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he Germans took control of the Italian army, freed Mussolini from imprisonment and set him up as head of a puppet government in Northern Italy. This blocked any further allied advance through Italy.
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The final battles of the European Theatre of World War II as well as the German surrender took place in late April and early May 1945.
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Victory in Europe was celebrated.
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The atomic bomb was first tested at Trinity Site, Near Alamogordo, New Mexico. The test weapon, "the gadget," and the Nagasaki bomb, "Fat Man," were both implosion-type devices made primarily of plutonium-239, a synthetic element created in nuclear reactors at Hanford, Washington.
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By executive order of President Harry S. Truman the U.S. dropped the nuclear weapon "Little Boy" on the city of Hiroshima.
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Russia declared war on Japan and invaded Japanese-ruled Manchuria.
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America reacted in bombing Hiroshima and Nagasaki three days later. Bombing Nagasaki and Hiroshima’s happened for shorting the War, saving Americans lives, and revenge.
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Japan announced its surrender to the Allied Powers, signing the Instrument of Surrender.