One alternative to manual traversal is querying for the data instead. In DOMDocument this is commonly done with XPath, a language dedicated to exactly that job.
It would probably be simplest to do this with a regex. Of course, it will break if the HTML structure changes.
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.