Journey across a continent in transformation, from the vast pre-settlement landscapes shaped by Indigenous peoples to the moment America declared its frontier closed. This sweeping history traces the explorers, trappers, migrants, prospectors, cowboys, and railroad builders whose ambitions and hardships redrew the map of the West. Blending geography, economics, and human drama, it examines how a century of restless movement forged—and fractured—a nation. A vivid, clear-eyed portrait of one of history's most mythologized eras and the lasting consequences it left behind.