No changes, it is just a library. The . NET 4.0 CLR wasn't needed, the DLR powered IronPython and IronRuby on the 2.0 version.
You can have a look-see at what makes it tick from that version, you can download the source code from here . This code was moved into System.Core. Dll largely unchanged.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.