I believe the application access token is for publishing on behalf of users . For pages, you should be using the page access token.
After more research I think there is no way to publish on pages with only a app token.
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.