Why are trade agreements regional? I address this question in a model of oligopoly featuring product variety. Tariffs have the effect of manipulating a country's terms of trade and shifting profits towards the domestic market at the expense of foreign trade partners. Countries endogenously form...

Does trade improve institutions and contribute to long run growth? I develop a theory of trade, in which trade liberalization provides incentive to change institutions in two ways. On the one hand, trade leads to specialization according to comparative advantage, expanding the industries that do...