Most economic activity occurs in cities. This creates a tension between local increasing returns, implied by the existence of cities, and aggregate constant returns, implied by balanced growth. To address this tension, we develop a theory of economic growth in an urban environment. We show how...

Is increased competition in international financial markets desirable? On the one hand, reductions in mnopoly power can be efficiency improving. On the other, increased competition may make it hard to coordinate in disciplining debtors in default. This paper presents a model that formalizes this...