Your program throws an error, because your script is in frame 1, but your buttons are in frame 20 - you are trying to add functionality to something that isn't there (yet). Make sure all your instance names are available by the time you add the event listeners, and the buttons should work - though for many reasons it is not a great idea to implement a site navigation this way.
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.