I'd guess that they're Uniform Resource Names with an "x-" prefix on the scheme to indicate that they're extensions (i.e. Not on the registered list ). You'll see "x-" prefix notation for extensions in email headers, HTTP headers, and even MIME types.
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.