So basically what you need to do is a function that takes each asset child of current node, builds the HTML then checks if the current node has asset children of its own and keeps recursing deeper down the tree.
You need to use a recursive function. Here is an example that outputs an array from XML. It is from the PHP docs - http://www.php.net/manual/en/ref.simplexml.php.
You can amend this to output a list.
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.