Maize and Precolonial Africa∗ Jevan Cherniwchany Juan Moreno-Cruzz Alberta School of Business School of Economics University of Alberta Georgia Institute of Technology August 2017 Abstract Columbus's arrival in the New World triggered an unprecedented movement of people and crops across the Atlantic Ocean. We study an overlooked part of this Columbian Exchange: the effects of New World crops in Africa. Specifically, we test the hypothesis that the introduction of maize during the exchange increased population density and Trans-Atlantic slave exports in precolonial Africa. We find robust empirical support for these predictions. We also examine the effects of maize on economic growth and conflict, and find that it had little effect on either channel. Our results suggest that rather than stimulating development, the introduction of maize simply increased the supply of slaves from Africa during the Trans-Atlantic slave trade. JEL Codes: J10, N00, O10, Q10 ∗We would like to thank Branko Boˇskovi´c,Byung-Cheol Kim, David Laband, Runjuan Liu, Arvind Magesan, Barry Scholnick and seminar participants at Georgia State, Georgia Tech, the University of Alberta, and the 2014 Canadian Economic Association meetings for helpful discussions and suggestions. We would also like to thank Nathan Nunn for sharing his slave export data with us. The usual disclaimer applies. yEmail:
[email protected]. zEmail:
[email protected] 1 Introduction Christopher Columbus's voyage in 1492 precipitated an unprecedented exchange between the Old and New Worlds. Among other things, this so-called \Columbian Exchange" led to the movement of both peoples and crops across the Atlantic Ocean.1 While most of this movement took place between Europe and the Americas, it is clear that Africa was also affected in profound ways.