We study the relationship between geography and growth. To do so, we first develop a dynamic spatial growth theory with realistic geography. We characterize the model and its balanced growth path and propose a methodology to analyze equilibria with different levels of migration frictions. We...

The rise of the People’s Republic of China (PRC) in world trade has brought both benefits and anxiety to other economies. For many policy questions, it is crucial to know the extent of foreign value added (FVA) in exports. We review a general formula in Koopman, Wang and Wei (2008) for...

This paper documents a decreasing trend in the geographical concentration of EU agro-food imports. Decomposing the concentration indices into intensive and extensive margins components, we find that the decrease in overall concentration indices results from two diverging trends: the pattern of...

We analyze temporary trade barriers (TTB) in Canada in 1989-2009. We find that, despite the retreat in TTB stocks in the last decade, there are signs of a rebound. New AD cases have surged during the crisis, which portends a rise in AD stocks that could last for several years. Thus, the...

Business services firms are increasingly under pressure from foreign competition. We develop an oligopolistic competition model that studies the effect of trade liberalization on exit and sectoral restructuring in the business services sector. We assume that firms are heterogeneous in their...

We present a dynamic comparative advantage model in which moderate reductions in import tariffs can generate sizable increases in trade volumes over time. A fall in import tariffs has two effects on the volume of trade. First, for given factor endowments, it raises the degree of specialization...