Review of the theories on economic agglomerations through time

The present work is part of a larger one whose general objective is to highlight the importance of the impacts that are generated not only in the economic spheres, but also in the socio-cultural, political, technological conditions, innovations, relationships to and from institutions and support services, paying special attention to how the new conceptions of globalized markets impact the way links and clusters are created For the above, it starts from knowing the basic concepts of the regional economics schools that have given way to theories about the agglomeration of companies and their impacts. Knowing a little about agglomeration economies, Industrial Districts, Productive Chains and Clusters