This paper analyses the effect on agglomeration tendencies of allowing firms to become multi-region firms in a standard model of trade and location. More specifically, we introduce horizontal and vertical multi-region firms into the core-periphery (CP) model developed by Krugman (1991). The...

This paper examines the impact of trade liberalization with heterogeneous firms using the Melitz (2003) model. We find a number of novel results and effects including a Stolper-Samuelson like result and several results related to the volume of trade, which are empirically testable. We also find...