Talk to the career adviser and your teachers.It sounds like that you need more challenges academically. Academics students tend to burn out and so I would be careful. Choose a mixture of hard and easy subjects.To be honest calculus is hard and you need to be really good at it.
What is you career path? If this is arts then choose Pop Lit and mythology. Psychology would be a good subject to choose too if you are going down the arts path.
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.