sentences:  (1967) and Ph.D. (1972) degrees in economic history from the University of Wisconsin–Madison.He taught at the University of Chicago from 1969 until 1992 and at Harvard University until 2006.His other academic posts have included visiting professorships at El Colegio de México, the National Autonomous University of Mexico, the National University of Buenos Aires, the Instituto Torcuato di Tella in Buenos Aires, and the Instituto Ortega y Gassett in Madrid.