Question

What was hiroshima and nagasaki and why did it happen?

Answer 1

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↔Horoshima and Nagasaki are towns/cities of Japan.

↔US destroyed the two cities by Nuclear bomb.

Answer 2

Hello mate I couldn't understand your question clearly

Hiroshima and Nagashaki are two cities of the country named Japan.

Here a historical event took place on Aug 6 and Aug 9 1945 in the world war II. The two cities was destroyed by the bomabardment of the atomic bomb by then usa.The two bombings killed 129,000–226,000 people, most of whom were civilians.