Is a 50,000 dollar a year salary considered middle class or lower middle class or upper?

Those two things are meaningless. You make 1.3 million this year or every year. If you only made that one year and you spent nearly 20% of it on a depreciating asset... you are definitely middle class.

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.