If you double click on a folder, that folder gets collapsed, but not the folders inside the one you clicked. I think, you may not need as you do not get to see those folders inside the one you clicked as they are hidden inside the collapsed folder.
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.