As our nation teetered on the brink of the Civil War, the certification of the election of Abraham Lincoln wasn’t a certainty. Author Erik Larson joins guest host John McCaa to discuss the presidential election of 1860, how Southerners labeled it a “hostile act,” and the chaotic months that followed before the first bullets flew at Fort Sumpter. His book is “The Demon of Unrest: A Saga of Hubris, Heartbreak, and Heroism at the Dawn of the Civil War.”