Where can I watch The American West in United States?

The story of the aftermath of the Civil War and how the United States transformed into the “land of opportunity" spanning the years 1865 to 1890. Transporting into the violent world of cowboys, Indians, outlaws and law men, the story chronicles the personal, little-known stories of Western legends such as Jesse James, Billy the Kid, Wyatt Earp, Crazy Horse and Sitting Bull.