Jeffrey G. Williamson is Laird Bell Professor of Economics Emeritus at Harvard and Honorary Fellow in the Department of Economics at the University of Wisconsin-Madison. He is the coauthor (with Kevin O'Rourke) of Globalization and History: The Evolution of a Nineteenth-Century Atlantic Economy and (with Timothy J. Hatton) of Global Migration and the World Economy: Two Centuries of Policy and Performance, both published by the MIT Press.