Storing a multidimensional array as an object variable, adding additional keys to the array?

Sorry to write an answer, but I'm not able to comment. I think that it's not correct to make an attribute public just to use it by that way. The correct thing should be make a setter to fill it, not modifying the class design just for that.

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.