Barbarians attack and score a tie. Is that considered a "successful" attack, allowing them to expand and continue attacking?

Well, it's success of a sort, but both armies are actually defeated. That's not enough to encourage the barbarians. The land that was just attacked is left empty (unless it contained a fort; a city or capital would also remain) and the barbarians cease their rampage.

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.