The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel was awarded in 2008 to the American economist Paul Krugman. The focus of his interest was the area of foreign trade, specifically the influence of economies of scale on economic geography and international trade. Krugman focused on analyzing the causes of urbanization, based on the theory of imperfect competition. In the field of international trade, he developed a theory on the impact of the concentration of production on relative transport costs. Through his work, Krugman managed to link both his areas of scientific interest