In the early 70s, the retail landscape of the Lisbon Metropolitan Area (LMA) was mostly confined to the Lisbon downtown. However, the retail landscape is changing at a rapid pace. In the mid-80s, two focus of retail competition (Amoreiras Shopping Center and Roma Avenue) appeared out-of-city...

This paper presents a simple two country model in which firms in manufacturing sector choose a technology level (high or low). I show how trade integration and productivity differential affect technology choice clearly. In particular, if the gap of productivity of high technology is medium,...