Dating to the Epiclassic period (600-900 CE), La Quemada was founded during the cultural florescence of the northern frontier of Mesoamerica, but the site was abandoned ca. 800-900 CE while other polities persisted. Therefore, it is hypothesized that a change in how the occupants of La Quemada identified with one another decreased the potential for collective action over time and contributed to site abandonment. Material proxies in the form of ceramic-style categories (i.e., shared styles expressing categorical affiliation) and fabric classes (i.e., shared pastes indicative of relational networks) are used to assess the temporal and spatial consistency of social identification at multiple socio-spatial scales within the site of La Quemada. The results of this research, however, find that despite fluctuations in the expression of categorical identification among La Quemada residents it was the strength of their relational ties that gave them the capacity to recover. Furthermore, the capacity for collective action was high preceding site abandonment, suggesting that a disruption in the social fabric of La Quemada did not contribute to its decline and abandonment.
Long Distance Exchange in Pre-Hispanic Chaco Canyon and the Mimbres Valley, New Mexico: A Comparison
I assess economic changes on three dimensions: foreign trade, local craft production, and household wealth. Trade is evaluated for obsidian and ceramics (INAA, petrography, type classification) and local crafting is evaluated for ceramic, lithic, textile, and molded ceramic items. Wealth is measured using all excavated artifacts, with the relative values of artifact classes based on Colonial Nahuatl wills. Prior to Aztec rule, trade was increasing and diversifying, but craft production was low. Under Aztec rule, trade reoriented toward the Basin of Mexico, craft production remained low, and household wealth stabilized. Pre-Aztec inter-household variation for all dimensions is low, before increasing during the Yata phase.
Cultural changes are evaluated for ritual activities and foodways. I evaluate the degree of interhousehold variability, the overall similarity to other parts of Central Mexico, the degree of change under Aztec rule, and immigration versus emulation as potential explanations for that change. Evaluation is based on the distinction between high and low visibility objects and practices. The Dongu and Ninupi phase households at Calixtlahuaca were culturally homogeneous and regionally distinctive. During the Yata phase, the site became moderately more Aztec, but this change was unevenly distributed among households.
Together, the economic and cultural patterns at Calixtlahuaca indicate that the pre-Aztec local organization of power was relatively collective, but that this was partially overlaid by relatively indirect and non-collective Aztec imperial rule, with mildly negative effects.
The Central Highland capital of Teotihuacan had variable influence throughout Mesoamerica. One pronounced occurrence of this influence has been identified at Matacapan, which displays strong material culture and architectural connections to Teotihuacan. This research therefore employs a modified world-systems framework which removes the assumption of hierarchy and instead focuses on regional interaction within the periphery. It views the establishment of regional distribution networks centered at Matacapan that articulate with the two neighboring polities as a form of incorporation, the process wherein external groups are brought into a system.
To assess incorporation, four potential Matacapan-centered networks are analyzed. These networks consist of the distribution of two ceramic types and obsidian blades produced from two sources. Artifacts from survey, surface collection, and excavation were subjected to ceramic analysis, lithic analysis, petrography, neutron activation analysis, and X-ray fluorescence analysis to identify source, form, and production technology. These data aid in determining network participation in each polity. By assessing importation in these local polities, the form and degree of their incorporation will be identified.
Incorporation of indigenous polities into regional networks was not uniform within the Western Tuxtlas Region. Two Matacapan-centered networks were identified, and they differ in form and extent. One indigenous polity, Teotepec, participated in both networks while the other, Totocapan, participated in one. I argue that Teotepec’s incorporation into a second network was strategic in that it was mutually beneficial to both involved parties. Additionally, indigenous Tuxtlas’ polities were able to negotiate interaction with their Teotihuacan-affiliated neighbor for desired goods without forfeiting political or cultural autonomy.
I then test the practical application of this methodology by applying it to a mortuary sample including individuals from distinctive socioeconomic groups from the pre-Hispanic city of Teotihuacan, Mexico. The study recovers and uses the dietary isotope ratios within bone and tooth samples from 81 individuals buried throughout the city 1) to define the dietary correlates of wealth and status at Teotihuacan and 2) to identify individuals displaying lifetime dietary changes consistent with changes in socioeconomic status. In addition to supplementing our current understanding of Teotihuacan foodways and processes of geographic migration into the city, I identify an adult male individual from the La Ventilla B apartment compound who displays dietary changes throughout his life that are consistent with downward socioeconomic mobility from a high status socioeconomic group in early adolescence to an intermediate status group later in adulthood. I conclude by identifying ways to move forward with the comparative archaeology of socioeconomic mobility in premodern contexts and highlight the applicability of archaeological information to our understanding of present-day processes of social mobility.
For at least the past 8000 years, small-scale farmers in semi-arid environments have had to mitigate shortfalls in crop production due to variation in precipitation and stream flow. To reduce their vulnerability to a shortfall in their food supply, small-scale farmers developed short-term strategies, including storage and community-scale sharing, to mitigate inter-annual variation in crop production, and long-term strategies, such as migration, to mitigate the effects of sustained droughts. We use the archaeological and paleoclimatic records from A.D. 900-1600 in two regions of the American Southwest to explore the nature of variation in the availability of water for crops, and the strategies that enhanced the resilience of prehistoric agricultural production to climatic variation. Drawing on information concerning contemporary small-scale farming in semi-arid environments, we then suggest that the risk coping and mitigation strategies that have endured for millennia are relevant to enhancing the resilience of contemporary farmers’ livelihoods to environmental and economic perturbations.