Migration, knowledge diffusion and the comparative advantage of nations * Dany Bahar (Harvard University) † Hillel Rapoport (Paris School of Economics and Bar Ilan University) [Download Newest Version] Keywords: migration, knowledge, comparative advantage, exports JEL Classification Numbers: F14, F22, F62, O33, D83 ∗ This paper benefited from helpful comments at various stages from Martin Abel, Sam Asher, Sebastian Bustos, Michele Coscia, Ricardo Hausmann, Elhanan Helpman, Juan Ariel Jimenez, Bill Kerr, Michael Kremer, Frank Nefke, Paul Novosad, Nathan Nunn, Rodrigo Wagner, Muhammed Yildirim, Andres Zahler and the participants of numerous seminars at Harvard Economics Department, Harvard Kennedy School, the Hebrew Uni- versity of Jerusalem and Bar Ilan University. All errors are my own. † Corresponding Author: [email protected] 1