This paper integrates the decision making of a firm facing production uncertainty into the theory of aggregate supply. This integration has two important policy implications. First, if the aggregate demand is not unitary price elastic, the presence of uncertainty reduces the aggregate supply,...

This paper surveys the empirical literature on the economic geography of trade flows, factor prices, and the location of production. The discussion is structured around the empirical predictions of a canonical theoretical model. We review empirical evidence on the determinants of trade costs and...