The United States went through a major transformation between the period starting with World War II and ending in the 1970’s. Two major turning points that changed America as well as the entire world forever were the dropping of the atomic bombs on Hiroshima and Nagasaki and the moon landing of Apollo II in 1969. On August 6th, 1945, the first atomic bomb was dropped on the Japanese industrial city of Hiroshima. The intent of President Harry Truman was simple: He wanted to end the war, end it decisively and end it without a large amount of American casualties. It was determined by the President and his military commanders that a full-blown ground invasion of Japan could risk the loss of up to one million American lives. The atomic bomb, however, could bring the war to a swift end with minimal loss of American life. After the first bomb, nicknamed “Little Boy” was dropped, Japan refused to surrender. Three days later, America dropped the second atomic bomb, “Fat Man” on the city of Nagasaki. The following day, Japan offered its surrender to the Unites States. These bombings had both positive and negative effects within the United States and abroad. On one hand, the American allies saved many lives by avoiding a full blown ground invasion of Japan. They also sent a message to the international community that they had the firepower necessary to defend or destroy. They also had the scientific knowledge to create a weapon of mass destruction. Internationally, the killings of many civilians presented the Americans in a negative light. Another feat accomplished by American scientists took place on July 20th, 1969, when two astronauts, Neil Armstrong and Buzz Aldrin landed on the moon. The first humans to ever land on the moon. The United States and the Soviet Union had a race going on. It was a battle that was ultimately won by America with the moon