Yes, you can promote Click Bank products, but you have to be careful not to be too pushy or overly commercial. I have placed some Click Bank products in a couple of my Hubs that deal with the same topic. There are some Hubs others have written that address how to promote Click Bank products in your Hubs.Do a search in the search bar at the top of the page to find them.
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.