Respuesta :

Product of the Cold War it seems,

On 1949, US government received an official confirmation that the Soviet Union had developed  a Nuclear bomb.

To maintain the upper hand, President Truman approved the development of the hydrogen Bomb, an equivalent to 500 Atomic Bombs.
Hagrid

The development of the Hydrogen bomb in 1954 was MOST LIKELY a product of the Hiroshima bomb. It was designed to develop an aircraft-deliverable thermonuclear weapon. It was codenamed Castle Bomb under Operation Castle.

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