Unsold books are wholesaled by lot to secondary buyers who in turn retail them for pennies on the dollar, or resell them to another bargain bookseller. The answerer who claims they're 'usually pulped' is completely incorrect.
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.