… September 27 - Steven Callander, Stanford University , “Why Does Political Power Alternate?” October 4 - Moses Shayo … November 8 - Christina Davis , Princeton University, “Why Adjudicate? Enforcing Trade Rules” November 15 - Pierre … , IMT-Lucca, “Warfare, Taxation, and Political Change: Evidence from the Italian Risorgimento ” January 31 - Kaj …