Peaks and troughs in the spatial distributions of population, employment and wealth are a universal phenomenon in search of a general theory. Such spatial imbalances have two possible explanations. In the first, uneven economic development can be seen as the result of the uneven distribution of...

We study the impact of falling trade costs and falling national transport costs on the economic geography of countries involved in an integration process. Two regions between which labour is mobile form each country, but there is no international factor mobility. Commodities can be traded both...

We investigate whether an aging population may challenge the supremacy of large working-cities. To this end, we develop an economic geography model with two types of individuals (workers and retirees) and two sectors (local services and manufacturing). Workers produce and consume; the elderly...

Paul Krugman has clarified the microeconomic underpinnings of both spatial economic agglomerations and regional imbalances at national and international levels. He has achieved this with a series of remarkably original papers and books that succeed in combining imperfect competition, increasing...