. >> now on your screen, prof sean remaining who is the author of this book, what this cruel war was over, soldiers, slavery, and the civil war professor. was your approach to this? >> the first thing to say is that you give me way to much credit. the book that i thought of was a larger restaurant, i started with the civil war soldiers in the desire for more help. absolutely no intention of all over the u.s. soldiers and slavery, none. i was enlisted in the regular farmers and the shopkeeper said and the non slaveholders, northern grain growers. so i really didn't think they're going to care about slavery rental. i was interested. somebody from boston different from somebody from ohio. somebody from the chesapeake different or similar to seven from appalachia. i was really interested in what people who live in the 19th century thought of how will they live connected to this thing called the nation. what does it mean to be in american. and some of plan was to do that, to look at how these guys talk about talk by the estate's, the union, the comparison, the south hoping that they would