bestate/b price differentials) that we are not able to control for. These factors tend to matter most for relatively poor regions neighbouring very rich regions, and less for clusters of regions at similar levels of economic activity. b..../b Vorpommern, Braunschweig, Hannover, Lüneburg, Weser-Ems, Düsseldorf, bKöln/b,. Münster, Detmold, Arnsberg, Koblenz, Trier, Rheinhessen-Pfalz, Saarland, Chemnitz,. Dresden, Leipzig, Sachsen-Anhalt, Schleswig-Holstein, Thüringen. Estonia ...