Strong letters of recommendation are crucial.
Letters of recommendation and maybe an internship/ any real clinical or research experience. Have you done any summer premedical programs?
Good undergraduate research and an excellent letter of recommendation from the professor who supervised your research. Just do an internet search on "undergraduate summer research.
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.