Question

The development of an atomic bomb by the Soviets in 1949 did all of the following except

pave the way for a nuclear arms race between the U.S. and Soviet Union.
increased psychological tensions in the U.S. and Soviet Union.
led to the authorization of the development of a hydrogen bomb in the U.S.
led to a treaty that limited the number of nuclear weapons in the U.S. and Soviet Union.

Answer 1

Led to the authorization of the development of a hydrogen bomb in the USA. They already had atomic bombs heroshima and nagasaki