Material Past
The economics of early inequality
Gregory Dow & Clyde Reed
Philosophical Transactions of the Royal Society: Biological Sciences, 14 August 2023
Abstract:
We examine three recent frameworks that attempt to explain early inequality. One explanation involves the emergence of dense and predictable resource patches in the Holocene, together with differential asset accumulation and inheritance by individuals or households. In this view, agriculture and pastoralism led to greater inequality because farmland and animal herds were readily inherited. Another explanation involves the distinction between ideal free and ideal despotic population distributions, together with factors that could trigger a transition from the former to the latter. We offer a third framework based on economic concepts. In our view, inequality initially arose across locations (insider–outsider inequality) and reflected geographical differences in resource endowments at those locations. As population densities increased, the barriers to individual migration across locations included fewer kinship linkages and the use of force by insiders to exclude outsiders. These barriers became important with the transition from mobile to sedentary foraging and predate agriculture. Insider–outsider inequality was followed by stratification within settlements (elite–commoner inequality), which arose at still higher population densities. We see these three theoretical approaches as distinct but complementary. While they overlap, each emphasizes some phenomena and processes ignored by the other two.
Income and inequality in the Aztec Empire on the eve of the Spanish conquest
Guido Alfani & Alfonso Carballo
Nature Human Behaviour, forthcoming
Abstract:
Today, Latin American countries are characterized by relatively high levels of economic inequality. This circumstance has often been considered a long-run consequence of the Spanish conquest and of the highly extractive institutions imposed by the colonizers. Here we show that, in the case of the Aztec Empire, high inequality predates the Spanish conquest, also known as the Spanish–Aztec War. We reach this conclusion by estimating levels of income inequality and of imperial extraction across the empire. We find that the richest 1% earned 41.8% of the total income, while the income share of the poorest 50% was just 23.3%. We also argue that those provinces that had resisted the Aztec expansion suffered from relatively harsh conditions, including higher taxes, in the context of the imperial system -- and were the first to rebel, allying themselves with the Spaniards. Existing literature suggests that after the Spanish conquest, the colonial elites inherited pre-existing extractive institutions and added additional layers of social and economic inequality.
Identifying key socioecological factors influencing the expression of egalitarianism and inequality among foragers
Kurt Wilson, Kasey Cole & Brian Codding
Philosophical Transactions of the Royal Society: Biological Sciences, 14 August 2023
Abstract:
Understanding how resource characteristics influence variability in social and material inequality among foraging populations is a prominent area of research. However, obtaining cross-comparative data from which to evaluate theoretically informed resource characteristic factors has proved difficult, particularly for investigating interactions of characteristics. Therefore, we develop an agent-based model to evaluate how five key characteristics of primary resources (predictability, heterogeneity, abundance, economy of scale and monopolizability) structure pay-offs and explore how they interact to favour both egalitarianism and inequality. Using iterated simulations from 243 unique combinations of resource characteristics analysed with an ensemble machine-learning approach, we find the predictability and heterogeneity of key resources have the greatest influence on selection for egalitarian and nonegalitarian outcomes. These results help explain the prevalence of egalitarianism among foraging populations, as many groups probably relied on resources that were both relatively less predictable and more homogeneously distributed. The results also help explain rare forager inequality, as comparison with ethnographic and archaeological examples suggests the instances of inequality track strongly with reliance on resources that were predictable and heterogeneously distributed. Future work quantifying comparable measures of these two variables, in particular, may be able to identify additional instances of forager inequality.
Potlatch economy: Reciprocity among northwest coast Indians
Bruce Johnsen
Public Choice, forthcoming
Abstract:
Among the Pacific Northwest Coast Indians of North America before and during the extended era of European contact, a pervasive institution known as the potlatch governed human relations through reciprocity rather than the hierarchical state. Potlatching involved recurring intertribal feasting, gift giving, ceremonial dance, storytelling, oratory, dispute resolution, declarations of claim or right, and some measure of property destruction. The tribes referred to this network of publicly declared favors given and owed and promises made and received as their customary “potlatch law.” Like law in the Western world, it was the foundation on which their economies rested. The potlatch memorialized obligations, enforced property rights, insured against risk, promoted knowledge accumulation, supplied investment capital, and served as a system of fractional reserve banking. Beyond that, it was the foundation of the tribes’ unique culture. The potlatch provides fascinating insight into the nuance and power of reciprocity in ordering human relations.
Why did foraging, horticulture and pastoralism persist after the Neolithic transition? The oasis theory of agricultural intensification
Dithapelo Medupe et al.
Philosophical Transactions of the Royal Society: Biological Sciences, 14 August 2023
Abstract:
Despite the global spread of intensive agriculture, many populations retained foraging or mixed subsistence strategies until well into the twentieth century. Understanding why has been a longstanding puzzle. One explanation, called the marginal habitat hypothesis, is that foraging persisted because foragers tended to live in marginal habitats generally not suited to agriculture. However, recent empirical studies have not supported this view. The alternative but untested oasis hypothesis of agricultural intensification claims that intensive agriculture developed in areas with low biodiversity and a reliable water source not reliant on local rainfall. We test both the marginal habitat and oasis hypotheses using a cross-cultural sample drawn from the 'Ethnographic atlas' (Murdock 1967 Ethnology 6, 109–236). Our analyses provide support for both hypotheses. We found that intensive agriculture was unlikely in areas with high rainfall. Further, high biodiversity, including pathogens associated with high rainfall, appears to have limited the development of intensive agriculture. Our analyses of African societies show that tsetse flies, elephants and malaria are negatively associated with intensive agriculture, but only the effect of tsetse flies reached significance. Our results suggest that in certain ecologies intensive agriculture may be difficult or impossible to develop but that generally lower rainfall and biodiversity is favourable for its emergence.
The invisible plant technology of Prehistoric Southeast Asia: Indirect evidence for basket and rope making at Tabon Cave, Philippines, 39–33,000 years ago
Hermine Xhauflair et al.
PLoS ONE, June 2023
Abstract:
A large part of our material culture is made of organic materials, and this was likely the case also during prehistory. Amongst this prehistoric organic material culture are textiles and cordages, taking advantage of the flexibility and resistance of plant fibres. While in very exceptional cases and under very favourable circumstances, fragments of baskets and cords have survived and were discovered in late Pleistocene and Holocene archaeological sites, these objects are generally not preserved, especially in tropical regions. We report here indirect evidence of basket/tying material making found on stone tools dating to 39–33,000 BP from Tabon Cave, Palawan Philippines. The distribution of use-wear on these artefacts is the same as the distribution observed on experimental tools used to thin fibres, following a technique that is widespread in the region currently. The goal of this activity is to turn hard plant segments into supple strips suitable as tying material or to weave baskets, traps, and even boats. This study shows early evidence of this practice in Southeast Asia and adds to the growing set of discoveries showing that fibre technology was an integral part of late Pleistocene skillset. This paper also provides a new way to identify supple strips of fibres made of tropical plants in the archaeological record, an organic technology that is otherwise most of the time invisible.
Wealth inequality in the prehispanic northern US Southwest: From Malthus to Tyche
Timothy Kohler et al.
Philosophical Transactions of the Royal Society: Biological Sciences, 14 August 2023
Abstract:
Persistent differences in wealth and power among prehispanic Pueblo societies are visible from the late AD 800s through the late 1200s, after which large portions of the northern US Southwest were depopulated. In this paper we measure these differences in wealth using Gini coefficients based on house size, and show that high Ginis (large wealth differences) are positively related to persistence in settlements and inversely related to an annual measure of the size of the unoccupied dry-farming niche. We argue that wealth inequality in this record is due first to processes inherent in village life which have internally different distributions of the most productive maize fields, exacerbated by the dynamics of systems of balanced reciprocity; and second to decreasing ability to escape village life owing to shrinking availability of unoccupied places within the maize dry-farming niche as villages get enmeshed in regional systems of tribute or taxation. We embed this analytical reconstruction in the model of an ‘Abrupt imposition of Malthusian equilibrium in a natural-fertility, agrarian society’ proposed by Puleston et al. (Puleston C, Tuljapurkar S, Winterhalder B. 2014 PLoS ONE 9, e87541 (doi:10.1371/journal.pone.0087541)), but show that the transition to Malthusian dynamics in this area is not abrupt but extends over centuries.
Mobile craftspeople and orientalising transculturation in seventh-century BC Iberia
Antonio Blanco-González, Juan Jesús Padilla-Fernández & Alberto Dorado-Alejos
Antiquity, forthcoming
Abstract:
During the early first millennium BC, Phoenician peoples settled the Iberian coasts instigating cultural innovations known as the orientalising; indigenous communities of the interior have long been considered as passively dependent on, or isolated from, these developments. Recent excavations at the Early Iron Age village of Cerro de San Vicente in central Spain, however, have yielded domestic contexts that prompt reconsideration of this relationship. The authors use settlement layout, architecture and locally made tablewares to identify heterarchical organisation around virilocal and bilateral kinship and hybrid practices that attest to adoption of know-how and practices from distant places. Emphasis is placed on the role of embodied craftworking skills and female mobility in transculturation processes.