To write a thesis paper you will need a statement that you can prove. You will prove the thesis with your supporting sentences. You may need adjust your statement.
Writing a thesis is challenging, but if you follow the guidelines you will be able to write an effective one. Choose a subject that you are familiar with. You can find more information here: ldeo.columbia.edu/~martins/sen_sem/thesi....
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.