A drop down list returns a single value, so in this case, it is trying to set the value string equal to your complex object. Unless you have a implicit conversion from string to your object, what you are trying to do will probably not work.
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.