This work investigates the systematic displacement and military subjugation of Plains Indian tribes during the late 19th century. Ralph K. Andrist utilizes historical records and contemporary accounts to construct a narrative of the conflict between expanding American settlement and indigenous populations. The text argues that the collapse of these cultures resulted from a combination of broken treaties, military force, and the relentless encroachment of the frontier.

Critics and historians recognize this work as a foundational text that shifted the popular understanding of the American frontier during the mid-20th century. Readers frequently note the accessible prose style, which balances detailed historical documentation with a clear, narrative-driven approach to complex geopolitical events.