This paper examines ethnohistoric and archaeological evidence of Inka imperial strategies for controlling resources and people in the Titicaca Basin and the coastal valleys of southern Peru and northern Chile, and suggests that Inka imperial policies were adapted to meet local conditions in a series of dynamic political and economic interactions. In the coastal region between the Tambo Valley of southern Peru and the Azapa Valley of northern Chile, Inka policies included, variously, the resettlement of labor colonists (mitmaqkuna), the direct incorporation of coastal groups, and the maintenance of alliances with autonomous coastal elites. Altiplano elites exploited the imperial system to extend their own networks of colonization and exchange. Recent archaeological surveys in the Ilo-Ite coastal region, as well as unpublished data collected by Gary Vescelius between 1958 and 1960, indicate that the Inka developed more direct control of the south-central coast than earlier polities had achieved, but that imperial control over this region was limited and influenced by the persistence of autonomous coastal groups. Groups around Ilo remained fairly independent, while parts of the Tambo and Sama valleys and the Quebrada Tacahuay were brought under direct imperial control.

This investigation uses a bioarchaeological approach to test the existence of pre-Inka colonists within the Andean coastal valleys of Moquegua, Peru, and Azapa, Chile, as predicted by Murra's (1972) classic model of verticality. The archaeological evidence and biodistance results obtained using genetically controlled dental traits from 859 skeletal and mummified remains indicate that the Late Intermediate period (A.D. 1100-1476) coastal Chiribaya people of the Moquegua Valley, Peru, likely represent descendants of altiplano populations that migrated to the coastal region following the disintegration of the Middle Horizon (A.D. 750-1100) Tiwanaku colony located in the middle Moquegua Valley. In the neighboring Azapa Valley, Chile, genetic change among prehistoric populations was due to gradual in situ microevolution of local populations rather than colonization by altiplano people. Coastal populations of the Azapa Valley maintained biocultural continuity with the Archaic period Chinchorro coastal population. It is concluded that Murra's model of direct verticality should be evaluated using both biological and archaeological data on a case-by-case basis.

Artificial cranial deformation is a recognized attribute of many archaeologically recovered Andean skeletal collections. Ethnohistoric sources document the diversity of forms used to mark both vertical and horizontal status distinctions among Late Horizon peoples. Region-specific social groups were characterized by distinctive deformation styles, as were individuals of Inka heritage. Review of early Spanish accounts and consideration of various strategies commonly used in analyzing deformation forms suggest that investigators be sensitive to both final skull shape and the nature of deforming devices. This case study maintains that detailed descriptions of skull form will permit interpretations of technique and apparatus used, without the actual deforming artifacts. We examined archaeologically recovered skeletal remains from Huaracane-phase, Tiwanaku-related Chen Chen-phase (Tiwanaku V), and Tumilaca-phase cemetery components of the Omo site group, located near the present-day town of Moquegua in southern Peru. Our analysis demonstrates that the pattern of cranial deformation within the Omo M10 cemetery complex clearly emphasizes homogeneity within individual cemeteries and heterogeneity across cemeteries. We enlist current competing models for Tiwanaku hegemony to interpret this pattern.

It is commonly assumed in both the public and professional perceptions of Maya archaeology that tombs serve as time capsules, each representing a single event, and that burials of single individuals were the normal interment type, at least during the Late Classic period (A.D. 550-800). The investigation of Caracol Structure A34 provides excellent examples of tomb re-entry as well as of multiple-individual interment in sealed contexts, both of which contradict current assumptions. Analyses of the excavations also embody a true conjunctive approach by utilizing stratigraphy, osteology, artifacts, and epigraphy. When the archaeological data from Structure A34 are placed within a broader context, single-event single-individual tombs are shown to be but one manner of interment at Caracol. Although the large number of multiple-individual burials and the possibility of widespread tomb re-entry at Caracol may appear aberrant when compared with general interment practices at other Maya sites, the inferred funerary rites are well within the bounds of worldwide cultural practices relating to death and burial.

Since the Formative times, maize is and has been a highly valued social commodity in the Andes, particularly in the form of a traditional beer called chicha. While chicha production is well attested in the archaeology and ethnohistory of Andean states, the emergence of maize symbolism in earlier societies has not been systematically addressed. In this study phytolith and starch grain analyses are used to trace production, processing, and consumption of maize at sites on the Taraco Peninsula of Bolivia and thus the entrance of maize into the region. We systematically examine the role of maize by addressing its rarity, use contexts, and preparation. The pattern of plant part representation and use suggest that maize was being consumed in the form of chicha at its earliest introduction to the Titicaca Basin (800–250 B.C.). Drinking of alcohol in ceremonial spaces embodies the process of commensality of public ceremony and the establishment of reciprocal relationships during the Formative period. These results demonstrate that contextual analysis of microbotanical remains has great potential to answer anthropological questions surrounding food, ritual, and identity.

In this paper we summarize more than a decade of interdisciplinary work at Calakmul, including (1) the mapping project, which has covered more than 30 km2; (2) the excavation project, which has uncovered major structures and tombs in the center of the city; (3) the epigraphic project, whose goal is to study the hieroglyphic texts and relate them to the archaeological evidence; (4) the analysis of the architecture, ceramics, and chipped stone to define sacred and secular activity areas and chronological stages; and (5) a focus on the ecology, hydrology, and paleoclimatology of Calakmul and its environs with the aim of understanding more fully its periods of development and decline.

During the central Mexican late Postclassic period, the Aztec Triple Alliance became the largest and most powerful empire in Mesoamerica. Yet ancient Tlaxcallan (now Tlaxcala, Mexico) resisted incorporation into the empire despite being entirely surrounded by it and despite numerous Aztec military campaigns aimed at the defeat of the Tlaxcaltecas. How did it happen that a relatively small (1,400 km²) polity was able to resist a more powerful foe while its neighbors succumbed? We propose a resolution to this historical enigma that, we suggest, has implications for the broader study of social and cultural change, particularly in relation to theories of state formation and collective action. We find it particularly interesting that the Tlaxcaltecas abandoned a key tenet of traditional Nahua political structure in which kingship was vested in members of the nobility, substituting for it government by a council whose members could be recruited from the ranks of commoners. To achieve such a significant deviation from typical Nahua authority structure, the Tlaxcaltecas drew selectively from those aspects of Nahua mythic history and religion that were consistent with a comparatively egalitarian and collective political regime.

Metal production has been a key economic activity in the southern Andes for the last 2,000 years, but relatively little is known about the indigenous technology used to process and smelt ores, in part because these activities are often difficult for investigators to identify in the archaeological record. In 2001 and 2002, members of the Proyecto Arqueológico Porco-Potosí had the opportunity to observe the use of indigenous smelting technology to produce silver in southern Bolivia. The data generated by these ethnographic observations, as well as by historical texts that describe traditional smelting, are used to interpret a sixteenth-century metal production site excavated by the authors in Bolivia and two production locales reported from Argentina and Chile. This assessment suggests that a great deal of variability existed in the metallurgical traditions of the southern Andes, and that the full spectrum will only be understood if archaeologists can recognize the material correlates of different types of technological processes.

Computer simulations are used to shed light on the probable origins of the earliest Preceramic cultures of the Greater Antilles and to understand the navigation skills necessary for island colonization. These cultures, dating to between ca. 4000 B.C. and 2000 B.C., are found on Cuba, Hispaniola, and possibly Puerto Rico. Two areas, northern South America and northern Central America, have assemblages that bear resemblance to the assemblages of the Greater Antilles, but there are important differences. Chance discovery of the Greater Antilles is possible from three areas: northern South America, northern Central America, and southern Florida. Directed voyages have a high degree of success from all three areas. However, voyages from northern South America require the least navigational skill, making it the most likely source of colonization. From northern Central America, foreknowledge of the islands appears to be required, while directed voyages from southern Florida encounter considerable risk.

Evidence from preceramic Paleoindian and Archaic time periods in Belize has been recorded over the past quarter of a century by a number of projects. This paper summarizes previously published information and presents new archaeological data in bringing the hunting-and-gathering and itinerant horticultural millennia of this region into a more accurate and comprehensive perspective than has been presented to date. The Paleoindian period includes influences from North as well as South America, with settlement preferences shown for river valleys and near-coastal margins. Cave sites hold particular promise for yielding new and well-preserved remains from this early period. The Archaic, beginning as early as 8000 B.C., is poorly dated until 3400 B.C. and was probably characterized by mobile hunter-foragers. The Late Archaic includes two facets, the Early (3400–1900 B.C.) and the Late (1500–900 B.C.) Preceramic, and represents the first appearance and gradual spread of cultivation together with habitat modification. The period beginning around 1500 B.C. shows intensifying maize cultivation, apparently mobile populations, and also the emergence of well-defined stone tool traditions that trend into the early Middle Preclassic. Ceramics seem to appear unevenly from ca. 1200 to 900 B.C., when the Cunil and Kanocha complexes in western Belize and Swasey sphere in northern Belize are reported.

In 1999, the Quispisisa source of obsidian was located in the Province of Huanca Sancos in central Ayacucho near the village of Sacsamarca. This discovery has been confirmed at the University of Missouri Research Reactor (MURR) by comparing the neautron activation analyses of source samples with artifacts. The Quispisisa source of volcanic glass provided the raw material for most of the obsidian artifacts utilized in central and northern Peru throughout prehispanic times.

Caves were used as ritual venues by the ancient Maya from the Early Preclassic to the Postclassic period. These sites have been intensively investigated, but little research has been devoted to changes in cave use over time. Work at Chechem Ha Cave in western Belize investigates transformations in ritual practice occurring between the Early and Late Classic periods using an explanatory framework that incorporates high-definition archaeological research with a paleoclimate reconstruction derived from speleothems. This is one of the first projects to directly link these data to the archaeological record. We also introduce new methodology to evaluate changes in ritual practice using use-intensity proxies and artifact patterning. These data demonstrate that Late Classic transformations were coeval with climatic drying. The phenomenon was identified in this case study, and the pattern is prevalent throughout the eastern lowlands suggesting that an ancient Maya drought cult was initiated at this time. We provide the first evidence that there was a failed ritual response to environmental stress, implying that a loss of faith in Maya rulership contributed to the downfall of political systems. This is an important finding for collapse theories that include ideological causations.

According to historical sources, the Inka relocated groups of craft specialists to provincial centers to manufacture goods for the state. Recent fieldwork in the Leche Valley on the north coast of Peru provides insights into the organization and technology of pottery production at these centers. While Inka style jars were added to their repertories, potters continued to manufacture vessels in local styles using local techniques. These results caution against a reliance on style in identifying products made in administered contexts, and question the equivalence of style with polity in the Inka provinces. They also highlight a need to critically evaluate Inka cultural policies and the significance of subject styles in the empire.

Archaic state formation simultaneously involved political integration and socioeconomic differentiation, which many archaeologists consider mutually reinforcing processes. Differentiation is considered to have consisted primarily of status and specialization, forms of heterogeneity that ultimately supported state integration. This paper addresses the role of differentiation in the Andean polity of Tiwanaku (A. D. 500–1150). Specifically, it evaluates expressions of social identity in relation to differences in status and specialized production in the urban settlements of Tiwanaku and Lukurmata. Patterns of ceramic style are compared with other types of material culture and residential activities. Multiple lines of evidence suggest that, in the context of a potent and ubiquitous state culture, significant social boundaries persisted at multiple social scales, ranging from urban corporate groups to more encompassing regional affiliations. At larger scales identity potentially involved some degree of political autonomy, as it did in later sociopolitical organizations in the south-central Andes. For several hundred years, Tiwanaku rulers, facing profound social diversity and enduring local identities, emphasized incorporative strategies of integration, leaving a great deal of productive management and sociopolitical organization in the hands of local groups. Social boundaries played critical roles in state formation and centralization, and ultimately may have precipitated its disintegration.

Results of 16 years of archaeological research at Copán, Honduras, based on different methods and theoretical perspectives, can be used in combination to better understand the developmental trajectory of Classic period sociopolitical evolution in the Copán Valley. Although research continues, findings to date demonstrate the advantage of conjunctive research that applies archaeological, epigraphic, and iconographic data in a crosscutting, self-corrective strategy. While the use of any single data set may produce incomplete or inaccurate conclusions, as in the use of settlement data alone to reconstruct Middle Classic population size and assess the developmental status of the Copán polity, more complete conclusions can be reached by applying a fuller range of data from excavations in both the valley and Acropolis of Copán's urban core, along with epigraphic and iconographic evidence. These combined data show that from its beginning in the fifth century, the Classic Copán polity was ruled by powerful kings who controlled large populations and, quite likely, an extensive territory that may have included the site of Quiriguá in the Motagua Valley to the north.

At the other end of the developmental trajectory, the combination of research findings from the Acropolis and surrounding elite residential compounds and valley settlement data, has led to a redefinition of the Classic “collapse” at Copán, now seen as a long-enduring process involving the decentralization of political authority, the end of centralized dynastic rule, and gradual depopulation of the valley. This reconstruction, in combination with evidence for the end of the Classic period at other Lowland Maya sites, supports the long-standing conclusion that there was no single cause for the collapse, but rather that a complex and long-operating series of processes was responsible for the end of lowland Classic Maya civilization.

This study reports on changing settlement patterns in the lower Tiwanaku Valley during the Formative (1500 B. C.-A. D. 100), Classic (A. D. 400-800), and Postclassic (A. D. 800-1100) periods. Based on the association of agricultural features with these site distributions, as well as the consideration of ethnohistoric and ethnographic information, it is argued that fundamental principles of the political and economic organization of the Aymara ayllus and markas can be inferred from the archaeological evidence. It also is suggested that Tiwanaku articulated local elites through mechanisms of reciprocity and common ideological denominators rather than through direct intervention and control of local sociopolitical hierarchies.

This report presents the results of a compositional study using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to examine central Mexican obsidian procurement at four sites dating to the Formative and Classic periods. The study demonstrates LA-ICP-MS to be a highly accurate obsidian sourcing technique, with results that are directly comparable to instrumental neutron activation analysis. It documents a shift circa 600 B.C. in which Middle Formative villages in Tlaxcala began to obtain obsidian almost exclusively from sources located in the Mesa Central, when they had previously obtained approximately 50 percent from Mesa Central sources and 50 percent from sources located in the Sierra Madre Oriental. This shift broadly coincided with the development of large regional centers in Tlaxcala-Puebla and suggests a linkage between the local political evolution occurring at this time and increased interactions with the Mesa Central economic sphere, including the Basin of Mexico. Obsidian workshop dump deposits next to Teotihuacan’s Moon Pyramid, dating to a millennium later, demonstrate the continued reliance on predominantly Mesa Central sources but also diversified procurement that drew on several sources. The Teotihuacan deposits exhibit the preferential utilization of particular sources depending on the types of implements being produced.

Owing to poor preservation of organic remains in humid environments, direct evidence of early manioc (Manihot esculenta Crantz) cultivation is exceptionally rare in datable archaeological contexts. Recent research summarized here offers new insights into the spatio-temporal framework of the initial domestication and early spread of manioc in the Neotropics. Integrating evidence from comparative plant genetics and paleoethnobotanic starch analysis to contribute to the archaeology of manioc origins, this review finds that (1) the strongest candidate for the botanical origin of domesticated manioc—the wild progenitor of the root crop—is the species Manihot esculenta subspecies flabellifolia (Pohl) Ciferri; (2) the geographical origin of manioc—the biome in which the progenitor evolved—is most likely in the savannas, the Brazilian Cerrado, to the south of the Amazon rainforest; (3) the Cerrado is also, in our best estimate, the region of agricultural origin of initial cultivation; (4) domesticated manioc had spread from the agricultural origin by the early Holocene, possibly as early as 10,000 years ago, but certainly by 7000 B.C.; and (5) domesticated manioc was a readily available plant in most habitats of the Neotropics by the mid-Holocene, at least some 6500 years ago.

Quebrada Tacahuay, located on the south coast of Peru, is one of the oldest expressions of maritime adaptations in the Western Hemisphere. Excavations conducted in 1997 and 1998 indicate that humans focused their activities on the collection and butchering of marine birds, particularly cormorants and boobies, and other marine resources more than 10,290 years ago (uncalibrated radiocarbon years B. P.). In addition to abundant zooarchaeological remains, cultural material includes unifacial lithic tools and one worked marine mammal rib. We report on the use of marine resources at the site in conjunction with the taphonomic history of site formation. Geological data indicate that El Niño flood events initially occurred during the Pleistocene and at various times during the Holocence. The abundant use of seafood indicates that Quebrada Tacahuay represents a specialized coastal extraction station used by Late Paleo-Indian populations with a well-developed littoral adaptation.

We are glad that Sharer et al. (this issue) have dropped their original claim that the INAA data demonstrate multidirectional movement of Early Formative pottery. Beyond this, however, they offer nothing that might enhance understanding of Early Formative ceramic circulation or inspire new insights into Early Formative cultural evolution in Mesoamerica. Instead, their response contains fresh distortions, replications of mistakes made in their PNAS articles, and lengthy passages that are irrelevant to the issues raised by Neff et al. (this issue). We correct and recorrect their latest distortions and misunderstandings here. Besides showing why their discussion of ceramic sourcing repeatedly misses the mark, we also correct a number of erroneous assertions about the archaeology of Olmec San Lorenzo. New evidence deepens understanding of Early Formative Mesoamerica but requires that some researchers discard cherished beliefs.