The uranium and plutonium bombs have proved to be the most powerful and deadliest weapons ever used in combat. It took many years of research to build the first bombs. After they were built, the tactics of warfare evolved and the United States became divided. The uranium and plutonium bombs killed many people in Japan and caused a significant amount of long-term damage on Japan. The production of the bombs led to the production of more complex and more lethal nuclear weapons such as the hydrogen bomb.

The production of the Uranium and Plutonium bomb started in 1942 when President Franklin D. Roosevelt launched the Manhattan Project. J. Robert Oppenheimer was appointed director of the Manhattan Project and became known as the father of the atomic bomb. ("Oppenheimer") Neils Bohr discovered that Uranium-235 was fissionable; which means that it can go under a fission...