In this unit, we learned about the different sources for historical research. Your teacher has assigned an essay on the Civil War. To help you get started, you teacher has assigned an essay on the civil war. To help you get started, your teacher gives you two sources: an autobiography of a civil war soldier and the novel The Killer Angels, which tells the story of the Battle of Gettysburg. Which source is a primary source, and which is a secondary source? Which source do you read first, and why? Support your answer with evidence you learned during this unit. Write your answer in complete sentence.