The most significant effect of dropping the atomic bombs on Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945) was the almost immediate unconditional surrender of Japan to the Allies in World War II. It was announced in August 15, 1945 and formally signed on September 2nd. Japan could not handle the amount of damage the bombs could do to the population of the country. The world was not ready to handle the level of destruction such a bomb could perpetrate. Japan took the risk to gamble that America wouldn't dare to throw a second bomb after Hiroshima, and they did. They couldn't risk receiving a third one. They had to offer their surrender immediately, specially after the Soviet's intervention on the other front.
