Analysis

The construction and use of the atomic bomb changed the world and revolutionized warfare forever. Here are some of the reasons the Manhattan Project was a revolution:

Since the Manhattan Project the world has been more peaceful, mostly because of what Winston Churchill called "neutrally insured destruction."
It separated the countries into two groups, one group with atomic technology, one without.
The dropping of the bombs on Japan strengthened America's seat as one of the most power countries.
It changed Japan's views and strengths, they lost power in the Pacific, and they began to live in fear of another atomic attack.
Since the dropping of the bomb, every generation and country has lived in fear of a a nuclear attack.
The psychological effect of the bomb on Hiroshima and Nagasaki have been devastating and changed the ethics of many people.
Atomic technology has gradually grown into nuclear technology and there are some nuclear power plants lighting cities around the globe.
Nuclear fission has gradually evolved into more powerful nuclear technology. Then this in turn has lead to nuclear energy, which powers cities and much of America's naval fleet.
There has not been a large scale war since, probably because each countries last resort would be nuclear weapons.

Here is Robert Serber's final words on the wonder of this new weapon of mass destruction: "The grandeur and magnitude of the phenomenon were completely breath-taking." Overall, many good and terrible events have occurred, but there is no doubt that they have revolutionized the world forever.