The main two main reasons why George didn't want Lennie to have a mouse are that he kills the mouse without knowing/realizing his own strength when the mice bite him, and Lennie bothers George by bringing that same mouse but Lennie doesn't know that bothers him. Lennie acts like a child mental.
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.