The US government's decision to develop a hydrogen bomb, first tested in 1952, committed the United States to an ever-escalating arms race with the Soviet Union. The arms race led many Americans to fear that nuclear war could happen at any time, and the US government urged citizens to prepare to survive an atomic bomb.
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however i believe this is called tax reform
He realized that because of his conduct of the War in Vietnam he could not win the Democratic Nomination
After the Tet offensive the American voters became disillusioned with the conduct of war in Vietnam and how it could be ended