Pekka Hamalainen's The Comanche Empire reflects critical historiographical turnsindigenous power, responses to settler colonialism, and a reorientation of perspectivewhile uncovering new directions in American Indian history. Moreover, his four-part framework for understanding powerspatial control, economic control, assimilation, and influence over neighborsprovides a useful model for analyzing indigenous polities in other places and times. However, by not explicitly framing the narrative of the Comanche empire within notions of sovereignty, Hamalainen leaves open opportunities for other scholars of the Comanche and of Native North America. Future historical studies of Native sovereignty, though, should include tribally specific notions of sovereignty and ways of knowing and remembering the past.