What impact did the hydrogen bomb have on America?
The main impact of the hydrogen bomb was to heighten the sense of fear felt by many Americans due to the tensions of the Cold War. With the development of the hydrogen bomb, Americans knew that they (and, soon, the Soviet Union) had bombs that were hundreds of times more powerful than the ones dropped on Hiroshima and Nagasaki. This led to an even greater sense of anxiety than had previously been felt. This increased level of fear and tension was the main effect that the hydrogen bomb had on the United States.