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There were no atomic weapons in World War 1, they hadn't been developed then- I think you must mean World War 2. The first bomb, to be dropped on Hiroshima, was named 'Little Boy'- the one dropped on Nagasaki was called 'Fat Man'. The 'Little Boy' bomb was so named because it was the first ever nuclear weapon of it's kind to be used in combat, and in time would lead to nuclear weapon development 'growing up' to bigger and more devastating bombs- it was probably also as a kind of sick irony, since the last thing it was was 'little'!! The 'Fat Man' bomb was so named because of it's shape- round and fat with a boxed tail.

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16y ago

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