While Demi Lovato has a pretty nice voice, I don't see her taking off in a way that Miley Cyrus did. Selena Gomez however has a uniqueness to her, that I think will pay off in the long run and allow her to make her own statement. So I would definitely have to go with Selena.
I don't know if she will ever be as big as Miley but she will come a lot closer than Demi I think.
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.