Letter

Greater post-Neolithic wealth disparities in Eurasia than in North America and Mesoamerica

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Abstract

How wealth is distributed among households provides insight into the fundamental characters of societies and the opportunities they afford for social mobility1,2. However, economic inequality has been hard to study in ancient societies for which we do not have written records3,4, which adds to the challenge of placing current wealth disparities into a long-term perspective. Although various archaeological proxies for wealth, such as burial goods5,6 or exotic or expensive-to-manufacture goods in household assemblages7, have been proposed, the first is not clearly connected with households, and the second is confounded by abandonment mode and other factors. As a result, numerous questions remain concerning the growth of wealth disparities, including their connection to the development of domesticated plants and animals and to increases in sociopolitical scale8. Here we show that wealth disparities generally increased with the domestication of plants and animals and with increased sociopolitical scale, using Gini coefficients computed over the single consistent proxy of house-size distributions. However, unexpected differences in the responses of societies to these factors in North America and Mesoamerica, and in Eurasia, became evident after the end of the Neolithic period. We argue that the generally higher wealth disparities identified in post-Neolithic Eurasia were initially due to the greater availability of large mammals that could be domesticated, because they allowed more profitable agricultural extensification9, and also eventually led to the development of a mounted warrior elite able to expand polities (political units that cohere via identity, ability to mobilize resources, or governance) to sizes that were not possible in North America and Mesoamerica before the arrival of Europeans10,11. We anticipate that this analysis will stimulate other work to enlarge this sample to include societies in South America, Africa, South Asia and Oceania that were under-sampled or not included in this study.

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Acknowledgements

Countless archaeologists make comparative work such as this possible. We thank the Amerind Foundation for funding and hosting the workshop resulting in this paper and the volume Ten Thousand Years of Inequality: The Archaeology of Wealth Differences; the Dynamics of Wealth Inequality Project and the Behavioral Sciences Program, Santa Fe Institute; and the Department of Anthropology and the College of Arts and Sciences, WSU. We acknowledge comments from R. Drennan, T. Earle, C. Hastorf, I. Morris, R. Oka, J. Sabloff and C. Szuter. This material is based on work supported by the European Research Council Grant Number 312785 (A.Bo.), the US National Science Foundation Grant Numbers BNS-91-05780 (G.M.F.), SBR-9304248 (G.M.F.), SBR-9805288 (G.M.F.), BCS-0349668 (G.M.F.), CNH-0816400 (T.A.K.), SMA-1620462 (T.A.K.), BCS-0313920 (A.M.P.) and BCS-0713013 (A.M.P.). IDOT and FHWA supported the Cahokia-area project.

Author information

Affiliations

  1. Department of Anthropology, Washington State University, Pullman, Washington 99164-4910, USA

    • Timothy A. Kohler
    •  & Laura J. Ellyson
  2. Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, New Mexico 87501, USA.

    • Timothy A. Kohler
    • , Amy Bogaard
    •  & Samuel Bowles
  3. Crow Canyon Archaeological Center, 23390 C R K, Cortez, Colorado 81321, USA

    • Timothy A. Kohler
  4. School of Human Evolution & Social Change, Arizona State University, PO Box 872402, Tempe, Arizona 85287-2402, USA

    • Michael E. Smith
    •  & Timothy J. Dennehy
  5. Institute of Archaeology, University of Oxford, 36 Beaumont Street, Oxford OX1 2PG, UK

    • Amy Bogaard
    •  & Jade Whitlam
  6. Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, USA

    • Gary M. Feinman
    •  & Linda M. Nicholas
  7. Department of Anthropology, 2424 Maile Way, 346 Saunders Hall, University of Hawaii at Mānoa, Honolulu, Hawaii 96822-2223, USA

    • Christian E. Peterson
  8. Illinois State Archaeological Survey, American Bottom Field Station, 1510 N 89th Street, Fairview Heights, Illinois 62208, USA.

    • Alleen Betzenhauser
  9. Department of Anthropology, University of Oklahoma, 455 W Lindsey, Dale Hall Tower 521, Norman, Oklahoma 73019, USA

    • Matthew Pailes
  10. Department of Anthropology, Stony Brook University, Stony Brook, New York 11794-4364, USA

    • Elizabeth C. Stone
  11. Department of Anthropology, University of Montana, Missoula, Montana 59812 USA

    • Anna Marie Prentiss
    •  & Thomas A. Foor
  12. Pierce College, 6201 Winnetka Avenue, Los Angeles, California 91371-0002, USA

    • Ronald K. Faulseit
  13. Institut für Archäologische Wissenschaften, Goethe-Universität Frankfurt am Main, Grueneburgplatz 1, RuW, 60323, Frankfurt am Main, Germany

    • Amy Styring
  14. Social Sciences Division, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates

    • Mattia Fochesato

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Contributions

T.A.K. and M.E.S. designed the study; all authors collected and contributed data; T.A.K., M.E.S., A.Bo., G.M.F., C.E.P., A.Be., M.P., E.C.S. and A.M.P. discussed results; T.A.K. analysed the data; T.A.K. and M.E.S. wrote the paper; T.A.K. and L.J.E. prepared the graphics.

Competing interests

The authors declare no competing financial interests.

Corresponding authors

Correspondence to Timothy A. Kohler or Michael E. Smith.

Reviewer Information Nature thanks M. Elliott and W. Scheidel for their contribution to the peer review of this work.

Publisher's note: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary information

PDF files

  1. 1.

    Supplementary Information

    This file contains Supplementary Tables 1, 3-7 and Supplementary References.

  2. 2.

    Life Sciences Reporting Summary

Excel files

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    Supplementary Table 2

    This file contains data used in the study, sorted by hemisphere and ascending date and also Supplementary Table 2 metadata.

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