How you send it to the server is up to you - a hidden field, an AJAX call, whatever you prefer. Once you've got the string on the server, you'll need 2 things.
JSON in the Hidden Field is a valid way to do it, as the data would then be posted to the server. You could then use the System.Web.Script.Serialization. JavaScriptSerializer component to deserialize the data (to a dictionary) and access the data that way.
Not 100% sure hhow array data comes out of that process. THere are also other tools like JSON.NET too to parse JSON.
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.