Sources: Cities: Hanson, J. W. (2016). Cities Database (OXREP databases). Version 1.0. Ports: de Graauw, A. et al. 2014. “Geodatabase of Ancient Ports and Harbors,” DARMC Scholarly Data Series, Data Contribution Series # 2013-2 (version 1.1). DARMC, Center for Geographic Analysis, Harvard University, Cambridge, MA 02138. Roads: McCormick, M. et … Continue reading Main Ports of the Roman Empire, c125 CE