Early Urbanization and the Persistence of Regional Disparities within Countries

We explore the extent to which present day economic development at the sub-national level captured by GDP per capita, urbanization, and night-time light density is correlated to regional economic development in 1850. Drawing on historical city data, we construct a measure of urban population density and other features of urbanization in 1850 for 2,055 sub-national regions covering 135 countries. We find strong evidence of persistence in regional development. In our baseline estimates, a one standard deviation increase in urban density in 1850 raises 2005 GDP per capita by almost 10%. Further, the presence of the largest national city in 1850 confers significant advantages to the region even 150 years later. While, our findings are robust to a large range of geographic and spatial controls, proximity to the coast and rivers continues to have a significant effect. We also find that while persistence is generally true there is also considerable heterogeneity across subsets of nations with it being strongest in Asia and West Europe. Finally, early urbanization is also associated with human capital and infrastructure differences across regions.