Optimal way to handle URL routing/Controllers in Yii?

You can do either way. Both creating separate controllers and putting multiple actions in a single controller will work. Personally I think it will be good to create a Ws module and put multiple controllers inside it.

One per model.

I also think that depends on your application. Personally I would create an own controller for each model and maybe introduce a base class, behavior or filter, if it's needed.

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.