Final answer:
The development of the hydrogen bomb spurred the United States and the Soviet Union into an arms race for nuclear-capable long-range missiles.
Explanation:
The development of the hydrogen bomb was a key event that catalyzed the United States and the Soviet Union to pursue nuclear-capable, long-range missiles. This technological advancement in nuclear weaponry spurred both countries into an arms race, leading to the possession of intercontinental ballistic missiles capable of delivering nuclear warheads.
The arms race between the United States and the Soviet Union during the Cold War era escalated with the creation of more destructive and sophisticated nuclear weapons, such as hydrogen bombs. The fear of Mutual Assured Destruction (MAD) acted as a deterrent, prompting both superpowers to develop advanced missile systems to ensure their strategic capabilities.
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