In the 36th episode of our Story of America series, Hillsdale College professor and author of Land of Hope, Bill McClay, explores one of the turning points in American history: the moment the American frontier finally closed. For generations, the pioneers of the Westward Expansion had defined what it meant to be American. They built homesteads, followed old trails west, and carried with them the restless belief known as Manifest Destiny. By the end of the nineteenth century, that era had vanished. The vast wilderness that once promised endless renewal was now parceled, fenced, and settled. McClay reflects on what was gained through western settlement—and what was lost.