Trade and the rise of ancient Greek city-states
研究比较优势在古希腊城邦兴起中的作用，发现潜在贸易伙伴间自然植被禀赋的空间协方差对银币、战争和城邦形成有重要影响，并反驳了此前强调的关键因素。
In this paper, I examine the role of comparative advantage in the rise of city-states. After compiling a new dataset on ancient Greece and the natural environment, I provide evidence that the spatial covariance of natural vegetation endowments amongst potential trading partners is important for explaining the development of silver coin money, battles, and city-state formation. I also provide statistical evidence against “key factors” previously emphasized. These findings are consistent with a general model of comparative advantage that I develop, which clarifies how the spatial covariance of factor endowments affects multiple development outcomes.