The Get function waits if necessary for the computation to complete, and then retrieves its result. That's means that your UI Thread is block till your task is completed. Since your are blocking your UI thread; progress bar, will never be shown.
Try wrapping your publishProgress() methods in the UI Thread.
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.