This paper shows that Zipf's Law for cities can emerge as a property of a clustering process.  If initially uniformly distributed people chose their location based on a specific gravity equation as found in trade studies, they will form cities that follow Zipf's Law in expected value.  This...

We develop a new methodology for quantifying the tasks undertaken within occupations using 3,000 verbs from around 12,000 occupational descriptions in the Dictionary of Occupational Titles (DOTs).  Using micro-data from the United States from 1880-2000, we find an increase in the employment...

This paper examines how economic activity and market participation are distributed across space. Applying a non-parametric von Thünen model to Nepalese data, we uncover a strong spatial division of labor. Non-farm employment is heavily concentrated in and around cities while agricultural wage...

This paper studies the recent trends in the spatial distribution of economic activity in the United States. Using county-level employment data for 13 sectors - which cover the entire economy - we apply semi-parametric techniques to estimate how agglomeration and congestion effects have changed...

Theories of city formation typically revert around agglomeration externalities driven by returns to specialization. Using survey data from Nepal, we test these theories by examining the relationship between proximity to urban centers and the organization of labor. We show that wards located in...

We analyze empirically the impact of urban agglomeration on Italian wages. Using micro-data from the Bank of Italy`s Survey of Household Income and Wealth for the years 1995, 1998, 2000 and 2002 on more than 22,000 employees distributed to 242 randomly drawn local labor markets (30 percent of...

This paper develops an infinite-horizon, political agency model with a continuum of political districts, in which incumbent politicians can improve their re-election probability by attracting swing voters in key states through strategic trade protection. A unique equilibrium is shown to exist...

Urbanization has been extensively used as a proxy for economic activity.  The urban status of settlements is usually determined by an ad hoc population size household.  This paper proposes a new threshold, taking into account the effect of local agricultural endowments.  The new population...

When European powers partitioned Africa, individuals of otherwise homogeneous communities were divided and found themselves randomly assigned to one coloniser. This provides for a natural experiment: applying a border discontinuity analysis to Ghana and Togo, we test what impact...