TY - JOUR AU - Keller,Wolfgang AU - Shiue,Carol H. TI - The Origins of Spatial Interaction JF - National Bureau of Economic Research Working Paper Series VL - No. 10069 PY - 2003 Y2 - November 2003 UR - http://www.nber.org/papers/w10069 L1 - http://www.nber.org/papers/w10069.pdf N1 - Author contact info: Wolfgang Keller Department of Economics University of Colorado-Boulder Boulder, CO 80309-0256 Tel: 303/735 5507 Fax: 303/492 8960 E-Mail: Wolfgang.Keller@colorado.edu Carol H. Shiue Department of Economics University of Colorado-Boulder Boulder, CO 80309-0256 E-Mail: carol.shiue@colorado.edu AB - Geography shapes economic outcomes in a major way. This paper uses spatial empirical methods to detect and analyze trade patterns in a historical data set on Chinese rice prices. Our results suggest that spatial features were important for the expansion of interregional trade. Geography dictates, first, over what distances trade was possible in different regions, because the costs of ship transport were considerably below those for land transport. Spatial features also influence the direction in which a trading network is expanding. Moreover, our analysis captures the impact of new trade routes both within and outside the trading areas. We also discuss the long-run implications this might have. ER -