I would like to draw your attention to a specific man. Albert Einstein. A German and father to Nuclear energy and the Atomic bomb. The Nuclear reactor itself and the components for it was developed all around the world and the first Nuclear power plant was built in Russia. Its clear as day that whatever development America did was not a critical discovery meaning it was going to be rapidly discovered by someone else if America had not gotten to it first. If anything America might have saved a year or two of time and I am being generous here.
I'm not bored enough to deal with the rest of your false statements but I loved the one above.
Perhaps you could detail exactly what role Albert Einstein played in the Manhattan Project?
To make it a little easier for you to answer this question I am providing a link to the wikipedia article. When you are finished reading that, please continue on to the list of sources and references at the bottom.
http://en.wikipedia.org/wiki/Manhattan_Project