I don't think there is an actual real reason for having so many hubs on mathematics. The only real answer I can offer you is that when people find things that are interesting to them they will write about them or if they feel they can present a topic well they will write about it. I don't know if this answer really clears anything up for you, but I sure hope you have a nice day!
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.