Elizabeth M. Brumfiel began work in Aztec studies by tackling nothing less than the economic symbiotic model of Aztec exchange and specialization. Her findings at Huexotla and Xico questioned this model and in its place Brumfiel focused on the politics of exchange and strategies of both state power and commoner households. Her long-term archaeological project at Xaltocan built on and expanded those themes by applying social theories to understand Aztec society, and inequalities more generally, from a bottom-up agency perspective. These intellectual commitments also guided Brumfiel's engagement with community archaeology and her professional leadership.