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Free ports, political economy, and early globalization: Evidence from 1750s Hamburg

Published online by Cambridge University Press:  02 February 2026

Esther Sahle*
Affiliation:
Free University of Berlin , Berlin, Germany University of Copenhagen, Saxo Institute, Berlin, Germany
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Abstract

Recent scholarship locates the origins of modern free trade policies in the early modern free port movement. This historiography has focused on the intellectual and political history of free ports and emphasized the importance of local and regional factors in shaping trade liberalizations in different European countries and colonies. Based on evidence from eighteenth-century Hamburg, this article proposes a different reading: it argues that free trade policies emerged in response to Atlantic trade expansion. The sources suggest that merchants and magistrates were aware of the monumental change which the growth of the Atlantic trade presented and the economic opportunities it provided. The liberalization of individual ports aimed to capture a greater share of that commerce. Free ports therefore constitute an early example of global economic change driving local European policymaking.

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Article
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2026. Published by Cambridge University Press
Figure 0

Figure 1. Caribbean free ports, 1500–1800Sources: Figures 1 and 2 are based mostly on Corey Tazzara’s (2014) list of free ports. For ports not included in Tazzara, see: Tortola: Mulich, ‘Microregionalism’; Hamburg, Amsterdam, Bremen: Pfister, ‘Great Divergence’; Lucea (Jamaica) 1766: Hunt, ‘Contraband; Barthelemy 1785: Han and Wilson, ‘Eighteenth-Century’; St Eustacius 1663: Kleiser, ‘Emulating Empires’. For full references see footnotes throughout. Copyright with the author.

Figure 1

Table 1. The establishment of free ports, 1591–1800

Figure 2

Figure 2. European free ports, 1500–1800Note: Ports marked with an * debated becoming a free port, but decided against it.