In the Arms and Space Races,the

In the arms and space races,the

A) America's geographical invulnerability was ended by intercontinental ballistic missiles.
B) United States was the first to launch a man-made satellite.
C) first man in space was an American.
D) Soviet backed down in the Cuban Missile Crisis without any concession from the United States.
E) Nuclear Non-Proliferation Treaty was signed within ten years of the bombing of Hiroshima.