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August 1, 2025
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nov 1, 1952 - US develops the first hydrogen bomb (H-bomb).

Description:

On November 1, 1952, the U.S. tested the first hydrogen bomb, "Ivy Mike," in the Marshall Islands. It was over 450 times more powerful than the Hiroshima bomb, escalating the Cold War arms race.

Added to timeline:

5 months ago
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Date:

nov 1, 1952
Now
~ 72 years ago