Using subnational historical data, this paper establishes the within country persistence of economic activity in the New World over the last half millennium. The paper constructs a data set incorporating measures of pre-colonial population density, new measures of present regional per capita...

The automation and out-sourcing of routine, codifiable tasks are seen as driving polarization in labor markets in high-income countries. This paper first offers several explanations for why developing countries might show differing dynamics, at least for the present. Census data then confirms...