To what extent do national borders and national currencies impose costs that segment markets across countries? To answer this question we use a dataset with product level retail prices and wholesale costs for a large grocery chain with stores in the U.S. and Canada. We develop a model of pricing...

Many papers have explored the relationship between average tariff rates and economic growth, when theory suggests that the structure of protection is what should matter. We therefore explore the relationship between economic growth and agricultural tariffs, industrial tariffs, and revenue...

This Paper provides a summary of what is known about trends in international commodity market integration during the second half of the second millennium. The range of goods that have been traded between continents since the Voyages of Discovery has steadily increased over time, and there has...

The paper provides a comparative history of the economic impact of the Revolutionary and Napoleonic Wars. By focussing on the relative price evidence, it is possible to show that the conflict had major economic effects around the world. Britain's control of the seas meant that it was much less...

We estimate the effects of major roads and public transit on the growth of major cities in the US between 1980 and 2000. We find that a 10% increase in a city’s stock of roads causes about a 2% increase in its population and employment and a small decrease in its share of poor households over...

Using a detailed data set at the tariff line level, we find an emulator effect of multilateralism on subsequent regional trade agreements involving the US. We exploit the variation in the frequency with which the US has granted immediate duty free access (IDA) to its Free Trade Area partners...

Long-run cross-country price data exhibit a puzzle. Today, richer countries exhibit higher price levels than poorer countries, a stylized fact usually attributed to the ‘Balassa-Samuelson’ effect. But looking back 50 years, or more, this effect virtually disappears from the data. What is...

Using data collected by the International Institute of Agriculture, we document the disintegration of international commodity markets between 1913 and 1938. There was dramatic disintegration during World War I, gradual reintegration during the 1920s, and then a very substantial disintegration...

According to the Washington Consensus, developing countries’ growth would benefit from a reduction in tariffs and other barriers to trade. But a backlash against this view now suggests that trade policies have little or no impact on growth. If "getting policies right" is wrong or infeasible,...

This Paper argues that a geographical perspective is fundamental to understanding comparative economic development in the context of globalization. Central to this view is the role of agglomeration in productivity performance; size and location matter. The tools of the new economic geography are...