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Quarterly Journal of Economics Vol. 134 No. 3 2019

Trade, Merchants, and the Lost Cities of the Bronze Age*

Gojko Barjamovic1; Thomas Chaney2; Kerem Coşar3; Ali Hortaçsu4

1 Harvard University · 2 Sciences Po · 3 University of Virginia and Center for Economic Policy and Research · 4 University of Chicago and National Bureau of Economic Research

Abstract

We analyze a large data set of commercial records produced by Assyrian merchants in the nineteenth century BCE. Using the information from these records, we estimate a structural gravity model of long-distance trade in the Bronze Age. We use our structural gravity model to locate lost ancient cities. In many cases, our estimates confirm the conjectures of historians who follow different methodologies. In some instances, our estimates confirm one conjecture against others. We also structurally estimate ancient city sizes and offer evidence in support of the hypothesis that large cities tend to emerge at the intersections of natural transport routes, as dictated by topography. Finally, we document persistent patterns in the distribution of city sizes across four millennia, find a distance elasticity of trade in the Bronze Age close to modern estimates, and show suggestive evidence that the distribution of ancient city sizes, inferred from trade data, is well approximated by Zipf’s law.

DOI
10.1093/qje/qjz009
Volume
134
Issue
3
Pages
1455-1503
Language
en
Sources
bibtex:phds-export.bib crossref openalex

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