You need to use the typename keyword because the std::vector::iterator type is dependent on the template parameter.
I agree it is confusing. Without the typename keyword, the name would be considered a static member. The book C++ Templates by Vandevoorde and Josuttis explains this in detail.
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.