Geography, biogeography, and why some countries are rich and others are poor

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Abstract
The most important event in human economic history before the industrial revolution was the Neolithic transition from a nomadic hunter-gatherer lifestyle to sedentary agriculture, beginning ≈10,000 years ago. The transition made possible the human population explosion, the rise of non-food-producing specialists, and the acceleration of technological progress that led eventually to the industrial revolution. But the transition occurred at different times in different regions of the world, with big consequences for the present-day economic conditions of populations indigenous to each region. In this article, we show that differences in biogeographic initial conditions and in geography largely account for the different timings of the Neolithic transition and, thereby, ultimately help account for the 100-fold differences among the prosperity of nations today. The effects of biogeography and geography on the wealth of nations are partly mediated by the quality of present-day institutions but also are partly independent of institutional quality.