Is √39 a rational or an irrational number

The Cold War is the name used to refer to the tension between two Superpowers: the United States and the Soviet Union.

The United States and the Soviet Union did not like each other.

The Soviet Union tried to spread communism throughout the world.

The United States tried to spread Capitalism throughout the world.

The two Superpowers created a large stockpile of nuclear warheads.