Add to ORKGThe aim of this paper is to explain from the questioning that by Krugman, why is richness geographically concentrated? geographers point to a variety of forms through which the initial advantages of some locations, they may not represent more than a historical accident, they tend to be reinforced over time. For such self-reinforcing processes that are called, often examples of cumulative causation. That is, once a region has a high concentration of production, this pattern tends to be cumulative: the dominant region takes advantage of location, that is, it becomes attractive for firms because of the large number of firms that already produce there (and not, for example to a better allocation of factors). In other words, the success explains...