Unfortunately, you can't pass in multiple fields without a "CSV" style format; only a single string is allowed.
You could use what you want as separator(f.e. The pipe |). You could easily split these values on serverside.
To join these field you could use a helper-function like this.
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.