Ancient Southeast Mesoamerica explores the distinctive development and political history of the region from its earliest inhabitants up to the Spanish conquest. It was composed of a matrix of social networks rather than divided by distinct cultures and domains. Making use of the area's rich archaeological data, Edward Schortman and Patricia Urban provide a social network analysis of southeast Mesoamerica. They demonstrate how inhabitants from different locales were organized within such networks, and how they mobilized the assets that they needed to define and achieve their own goals. The also provide evidence for the actions of other groups, who sought to promote their importance at local and regional scales, and often opposed those efforts. Schortman and Urban's study demonstrates the fresh insights gained from study of socio-political structures via a social network perspective. It also challenges models that privilege the influence of powerful leaders in shaping those structures.