Which of the following is NOT true about the arms race between the United States and the Soviet Union during the cold war?

A. The Soviet Union created the first man-made satellite, prompting the United States to develop the National Aeronautics and Space Administration (NASA).
B. The Cuban Missile Crisis was the closest the world ever came to a nuclear war.
C. President Richard Nixon developed the theory of detente, in which two SALT treaties were created to increase U.S. holdings of nuclear weapons and anti-ballistic missiles.
D. The United States became involved in the Korean War.

I say c.

Right.

To determine which statement is NOT true about the arms race between the United States and the Soviet Union during the Cold War, we need to analyze each statement and identify any inaccuracies.

A. The Soviet Union created the first man-made satellite, prompting the United States to develop the National Aeronautics and Space Administration (NASA).
This statement is true. In 1957, the Soviet Union launched the first satellite, Sputnik 1, which prompted the United States to take action and invest heavily in space technology. As a result, NASA was established in 1958.

B. The Cuban Missile Crisis was the closest the world ever came to a nuclear war.
This statement is also true. The Cuban Missile Crisis in 1962 was a high-stakes confrontation between the United States and the Soviet Union, with nuclear weapons at their disposal. It is widely recognized as the closest the world has ever come to a nuclear war.

C. President Richard Nixon developed the theory of detente, in which two SALT treaties were created to increase U.S. holdings of nuclear weapons and anti-ballistic missiles.
This statement is NOT true. President Richard Nixon did play a significant role in pursuing detente, which aimed to ease tensions between the United States and the Soviet Union. However, detente meant reducing the arms race, not increasing it. The Strategic Arms Limitation Talks (SALT) treaties, which were signed in 1972 and 1979, aimed to limit the number of nuclear weapons possessed by both countries.

D. The United States became involved in the Korean War.
This statement is true. The United States did become involved in the Korean War, which took place from 1950 to 1953. The conflict was driven by Cold War tensions, with the United States supporting South Korea against communist North Korea.

Based on this analysis, the statement that is NOT true about the arms race between the United States and the Soviet Union during the Cold War is C. President Richard Nixon did not develop a theory of detente to increase U.S. holdings of nuclear weapons and anti-ballistic missiles. Instead, detente aimed to reduce the arms race and limit nuclear weapons through the SALT treaties.