USA HISTORY

Detailed explanation-1: -After the bomb was dropped, Stalin was furious. The place Russia had earned as a world power by its victory in the war had been snatched away.

Detailed explanation-2: -It would only be a matter of months before the U.S.S.R. exploded its own atomic bomb. The Soviets successfully tested their first nuclear device, called RDS-1 or “First Lightning” (codenamed “Joe-1” by the United States), at Semipalatinsk on August 29, 1949.

Detailed explanation-3: -Results of the explosion seemed to indicate the device as more similar to a powerful fission bomb than an actual hydrogen bomb. The test’s explosion yielded the equivalent of 400 kilotons of TNT, making it 30 times larger than the atomic bomb dropped on Hiroshima.

Detailed explanation-4: -Initially, only the United States possessed atomic weapons, but in 1949 the Soviet Union exploded an atomic bomb and the arms race began. Both countries continued building more and bigger bombs.