You could simply store $request->getPostParameter('comment') in an array and use array_pop() on this array, but I think it would be better to understand why you're getting an array. I think the name of the textarea must be comment when it should probably be just comment .
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.