My topic is the atomic bomb. Two questions I have are one, why did the atomic bomb happen? Two, how did the atomic bomb change the world? The sub-topics introduce the Manhattan project. Japan refused to surrender, why the United States dropped an atomic bomb on Hiroshima and Nagasaki? The atomic bomb was first used in warfare at Hiroshima and Nagasaki in august 1945, and the bomb played a key role in ending World War II. The Atomic bomb created the Manhattan project. The Manhattan project was first exploded at the top secret base of Alamogordo on July 16th 1945. The bomb that dropped on Hiroshima was code-name “little boy”. What good did it bring the U.S people when they fired the atomic bomb? What good did it bring japan when they didn’t surrender? When the two nuclear weapon were exploded over japan at the Hiroshima and Nagasaki .the official reason why is that the war would immediately end .saving the lives of thousands of American serviceman. Deaths from the atomic bomb estimated to be about 100,000 astounding. The atomic bomb is the most powerful destructive force that mankind has ever wielded. Japanese faced certain defeat. The refusal that japan show led to a powerful weapon called the atomic bomb. In 1939 German-born physicist albert Einstein wrote to president Roosevelt warning him that Nazis might try to use the energy of the atomic bomb to build extremely powerful bombs. Thinking of creating such powerful weapons first. Roosevelt created a top secret operation called the Manhattan project. Culminated in the development of the nuclear bomb “the Manhattan project “was established before world war II. The most complicated issue to be addressed in making of an atomic bomb was the enriched production of ample uranium to sustain a chain reaction. At time uranium 235 was very hard to extract ‘the useful u235 and hearty useless u238 are isotope’s; nearly identical in their chemical makeup. In conclusion the atomic bomb was a powerful deadly weapon that was built to play a role in world war II, the decision that President Truman made to fire the atomic bomb was a good idea in my opinion, I would do the same if I was president, instead of killing almost 24,000 of American citizens he made a good decision to kill 24,000 Japanese, but before he fired on the Japanese he gave them a warning and well I guess god didn’t like stubborn people, if he would surrender those people would die and the world would be a happier place but everything happen for a reason.