Guillaume Daudin (https://gdaudin.github.io) has been Professor of Economics at the University of Paris-Dauphine (LEDa-DIAL) since 2012. He is associated to the OFCE (SciencesPo Paris) and the Institute for European Global Studies (University of Basel). He was President of the Association Française d'Histoire Économique from 2016 to 2019. He is a specialist in early modern economic history and current commercial globalization. His most recent research focuses on the eighteenth-century French trade (see http://toflit18.medialab.sciences-po.fr/#/home), the long eighteenth Anglo-French trade war, slave trade profits, current value-added trade and the importance of additive costs in international trade since 1974.