You are right. It was small bug in the data from my previous answers about.
By sorting, do you mean, auto-sorting the tree options such that they fall under the appropriate nodes, or being able to sort by other rows (the second of which doesn't really make sense, as the tree organizes the data, so I'm not sure how sorting would make sense.).
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.