Yes graphene is a new 2 dimensional material what is the hardest and thinnest material known to man also it can conduct electricity 100 times faster than silicon in computer chips and much much more it really is a wonder material so yes it is harder than diamond.
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.