For the Karankawas and the Tonkawas, the period from 1821 to 1859 was particularly devastating. Once thriving communities, the Karankawas survived only as scattered individuals after a small remnant on the banks of the Rio Grande was massacred, and the few remaining Tonkawas had been pushed across the Red River into Indian Territory.Kelly F. Himmel has written an account of this conquest that gives new understanding of the processes. He explores geopolitical and economic factors, as well as the role of individual and collective human actors and the effects of cultural orientations of the conquered and conquering groups toward each other.Historians, sociologists, and anthropologists will find new insight and information in this valuable addition to the literature on Texas Indians and Texas history.