Population density is a red herring on it's own. Spain has a relatively low population density, but the cities are probably some of the most dense in Europe. Li

Population density is a red herring on it's own. Spain has a relatively low population density, but the cities are probably some of the most dense in Europe. Likewise 1/3 of Swedes live in cities, while there are huge areas that are very sparsely populated in the north.