Transport costs, intermediate goods, and localized growth

This paper presents a dynamic, two-regional, general equilibrium model in which interregional production and trade patterns are endogenously determined. Localized growth stems from the geographical concentration of an industrial sector exhibiting permanent productivity increases. Geographical concentration is a result of the interaction between local market size and local competition in the differentiated input industry. Regional factor endowment with an immobile factor is decisive for the long-run specialization, trade and growth patterns between the regions if large endowment differences prevail. With equal-sized regions, multiple equilibria exist. Furthermore, we argue that integration might lead to increasing regional concentration of production and innovation.