If you have multiple units of work you WILL eventually have problems, because if you try to relate an entity from one context (unit of work) to an entity from another context, you'll have a change tracker collision.
You can have as many unit of work instances as you need within single request processing. Unit of work represents single logical operation.
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.