TY - JOUR AU - Alesina,Alberto AU - Spolaore,Enrico AU - Wacziarg,Romain TI - Economic Integration and Political Disintegration JF - National Bureau of Economic Research Working Paper Series VL - No. 6163 PY - 1997 Y2 - September 1997 UR - http://www.nber.org/papers/w6163 L1 - http://www.nber.org/papers/w6163.pdf N1 - Author contact info: Alberto F. Alesina Department of Economics Harvard University Littauer Center 210 Cambridge, MA 02138 Tel: 617/495-8388 Fax: 617/495-7730 E-Mail: aalesina@harvard.edu Enrico Spolaore Department of Economics Tufts University Braker Hall 8 Upper Campus Road Medford, MA 02155 Tel: 617/627-4068 Fax: 617/627-3917 E-Mail: enrico.spolaore@tufts.edu Romain Wacziarg Anderson School of Management at UCLA C-510 Entrepreneurs Hall 110 Westwood Plaza Los Angeles, CA 90095-1481 Tel: 310 825 4507 E-Mail: wacziarg@ucla.edu AB - Trade liberalization and political separatism go hand in hand. In a world of trade restrictions, large countries enjoy economic benefits because political boundaries determine the size of the market. In a world of free trade and global markets even relatively small cultural, linguistic or ethnic groups can benefit from forming small and homogeneous political jurisdictions that trade peacefully and are economically integrated with others. This paper provides a formal model of the relationship between openness and the equilibrium number and size of countries, and successfully tests two implications of the model. The first one is that the economic benefits of country size depend on and are mediated by the degree of openness to trade. The second is that the history of Nation-State creations and secessions is influenced by the trade regime. ER -