That was the last element necessary to bring Japan too its knees and finally end world War II.
The atomic bomb not only ended the war but also positioned the United States as the number one in military power and allowed it to lead the world militarily, economically and industrially. With the rise of the Soviet Union after the defeat of Nazi Germany, the US needed to send a clear signal to the rest of the world that it is in charge and no other nation would dare invade its