Almost all of them are made of steel. For weight savings, the newest models such as the TGV Duplex have aluminum body shells (except for the locomotives which are still made of steel), and even feature magnesium seat frames! More.
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.