The earth seems flat for all practical purposes when looking at a small enough lot. However the towers of very long bridges must take into consideration the curvature of the earth. Also the surface of the ocean near a boat seems relatively flat but of course the oceans are global being attracted to the same level away from the earth's center of gravity.
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.