The Manhattan Project was the significant event which led to the developement of the first atomic bomb in World War II. It was the U.S. government's secret project. General Leslie R. Groves Jr. was in command of this project. The idea of forming a research team to create a nuclear weapon was endorsed in a letter that Einstein sent to Franklin Roosevelt. Later in the project the first atomic bomb was exploded at Los Alamos. The director of Los Alamos said upon witnessing the first test of a nuclear weapon:
In the final stages of World War II, the United States conducted two atomic bombings against Hiroshima and Nagasaki. The first drop was on August 6, 1945, and the second was on August 9, 1945. The first bomb (dropped on Hiroshima) was called "Little Boy". The second bomb (dropped on Nagasaki) was called "Fat Man". The United States strategically fire-bombed 67 Japanese cities. Hiroshima's casualties and losses totaled at 90,000 to 166,000 people, while Nagasaki's accumulated 60,000 to 80,000. Half of the deaths in each city occured on the first day.
All this evidence serves as justification for how deadly atomic bombs are and how strategic and dangerous the United States can be, when messed with.
"We knew the world would not be the same. A few people laughed, a few people cried, most people were silent. I remembered the line from the Hindu scripture, the Bhagavad-Gita. Vishnu is trying to persuade the Prince that he should do his duty and to impress him takes on his multi-armed form and says, 'Now, I am become Death, the destroyer of worlds.' I suppose we all felt that one way or another."
-J. Robert Oppenheimer
Enola Gay was the Boeing B-29 Superfortress bomber. It was the first aircraft to drop an atomic bomb as a weapon of war. Enola Gay carried "Little Boy", which was targeted at the city Hiroshima, causing extensive destruction.