Answer:
atomic bombings of Hiroshima and Nagasaki
World War II [1945]
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BY The Editors of Encyclopaedia Britannica Last Updated: Jul 30, 2021 | View Edit History
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atomic bombings of Hiroshima and Nagasaki, during World War II, American bombing raids on the Japanese cities of Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945) that marked the first use of atomic weapons in war. Tens of thousands were killed in the initial explosions and many more would later succumb to radiation poisoning. On August 10, one day after the bombing of Nagasaki, the Japanese government issued a statement agreeing to accept the Allied surrender terms that had been dictated in the Potsdam Declaration.