The Dropping of the Atomic Bomb on Nagasaki. IRC, 2005. Discovery Education. Web. The image above shows the mushroom cloud formed by the explosion of the atomic bomb that the United States dropped on Nagasaki, Japan, in 1945. Be sure to provide details and examples in your answer.

1.)Describe the important events and circumstances that led to the nuclear arms race between the United States and the Soviet Union.
2.) What consequences did the nuclear arms race have in the United States?
3.) Should the event shown in the photograph be considered the beginning of the Cold War? Use evidence to support your position.