This Paper examines city formation in a country whose urban population is growing steadily over time, with new cities required to accommodate this growth. In contrast to most of the literature there is immobility of housing and urban infrastructure, and investment in these assets is taken on the...

This chapter describes how the spatial distribution of economic activity changes as economies develop and grow. We start with the relation between development and rural-urban migration. Moving beyond the coarse rural-urban distinction, we then focus on the continuum of locations in an economy...

We analyze the efficiency of urbanization patterns in a stylized dynamic model of urban growth with three sectors of production. Pollution, as a force that discourages agglomeration, is caused by domestic production. We show that cities are too large and too few in number in uncoordinated...

This paper examines the relationship between openness and within-country regional inequality across 28 countries over the period 1975-2005. In particular, it tests a) whether increases in trade lead to rising inequalities, b) whether these inequalities recede in time, and c) whether increases in...

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 share...

The steam engine is widely regarded as the icon of the Industrial Revolution and a prime example of a ‘General Purpose Technology,’ and yet its contribution to growth is far from transparent. This Paper examines the role that a particular innovative design in steam power, the Corliss engine,...

Are product standards protectionism in disguise? This paper estimates the costs of non-compliance with U.S. product standards, using a new database on U.S. import refusals from 2002 to 2012. We find that import refusals significantly decrease exports to the United States. This trade reducing...

A key driver of foreign investment in land, food security is a challenge mankind has been confronted with in various times and places. Wherever human societies have developed, growing needs have led to increasing arable land, and when land has been limited by nature or wars, food shortages...