Since the beginning of the 20th century, the Austrian-Czech border region has been exposed to recurrent large-scale and unforeseen episodes of economic integration and disintegration. The current project will use this unique historical experience of repeated (dis-)integration to analyze its economic effects empirically and to test the predictions of economic geography models of regional development. The project will therefore substantially enrich the still rather limited but growing empirical literature on the regional economic consequences of market (dis-)integration at the subnational level.