Should I include all of the specific points that i am going to be addressing in my essay in the thesis, or should I just generally answer the question?
You should generally answer the question in your thesis with the overall topics of each paragraph you are going to write. You don’t want to use specific pieces of evidence, but you should definitely specify how you will support your argument in the following paragraphs.
So I should state the topics of the groups I put the documents in?
Yes, that is a great way to write the thesis!
Yes, I would do that in a topic sentence at the beginning of each body paragraph.