As I am not sure which year your question is about 1919 or 1991, I have given you two web sites that cover both those years. If you could add an edit to your question then users will be able to help you further.
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.