Question

Which event marked the start of the nuclear arms race? Soviet Union's first test of an atomic bomb in 1949 United States' first test of a hydrogen bomb in 1952 Soviet Union's launching of Sputnik 1 in 1957 Cuban Missile Crisis of 1962

Answer 1

This question is faulty. The nuclear arms began during WWII. The Soviets, Germany, Japan, Canada, the UK, and the U.S. were all racing to develop a nuclear bomb. The U.S. won the first leg of that race. The USSR quickly caught up.