Since changes in trade openness are typically confounded with other factors, it has been difficult to identify the … labor market consequences of increased international trade. The advent of the United States Interstate Highway System … provides a unique policy experiment, which I use to identify the effect of reducing trade barriers on the relative demand for …

This study is a theoretical and empirical analysis of the effects of regional trade integration on the spatial … 1940-1960. By using inter- and intrastate trade flow from the U.S. Commodity Flow Survey, we also analyse the impact of … regional trade costs for the contemporary period (1997, 2002, 2007). The theoretical model shows that the bell-shaped curve of …