作者：KIM, S
作者单位：National Bureau of Economic Research
摘要：This paper presents evidence on the long-run trends in U.S. regional specialization and localization and examines which model of regional specialization is most consistent with the data. Regional specialization in the United States rose substantially between 1860 and the turn of the twentieth century, flattened out during the interwar years, and then fell substantially and continuously since the 1930s. The analysis of the long-run trends in U.S. regional specialization and localization support...
