I noticed that when I was in school, too. I think it was based on a cultural idea of which postures were "feminine" or "manly." There was also social pressure for girls and boys to sit in different ways.
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.