I am at level 5, but I myself don't know about the requirements about this. Hub Pages has devised a method by which they do this. I think it's better to concentrate on the work rather than indulging in this number game.
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.