Seeing as a lot of good/bad luck concerning numbers comes from the bible (13 comes from the number of disciples + jesus, 6 is the number of the devil, etc. ) then I would say that the number 7 could be considered of good luck, since 7 is considered a holy number.
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.