Professor David Blight delivers his final lecture in this portion of Yale's America at 250: A History course, examining the lingering costs of the Civil War through the lens of the Lost Cause narrative, the emergence of the New South, and the origins of Jim Crow segregation. The lecture also considers westward expansion during this period as part of the broader national reunion after the war, a reunion Blight characterizes as violent and incomplete for many Americans. Recorded in Yale's Battell Chapel as part of the DeVane Lecture series, the course surveys United States history from 1776 to the present across lectures by three Yale historians, closing out Blight's sequence before the course moves to the twentieth century.