Well there is more than one imaginary line. There is the Equator, Prime Meridan, The tropic of Capricorn, the tropic of cancer, The arctic circle, and the antarctic circle. That's all I know.
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.