Bernard E. Powers, Jr. Professor of History and advisor to Drayton Hall, participated in the recent CBS Sunday Morning program “150 Years Later, U.S. Civil War Causes Disputed.” to ‘mark the 150th anniversary of the the start of the Civil War, Martha Teichner explores the dispute over the war’s causes-and what that means for our future as a nation’. View CBS video at http:www.cbsnews.com/video/watch/id=7363696n&tag=related;photovideo