Is there a tree structure or algorithm to shuffle around levels in a tree?

You want to present elements in a tree structure, but with a variable tree depth and changing tree branching: I doubt a tree structure is actualy what you want.

They way I would go around to solve this is to define a list item that lookgs something like this.

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.