The Changing Incidence of Geography
---- Acknowledgements -----
The research in this paper was supported by Industry Canada. We thank Mark Brown, Serge Coulombe, John Helliwell and the participants in the Advances in International Trade Workshop at Georgia Tech, and the Fall 2008 Midwest Meetings in International Trade for useful comments. We gratefully acknowledge the very detailed and useful comments of two referees. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.