Expositio totius mundi et gentium ("A description of the world and its people") refers to a brief "commercial-geographical" or Handelsgeographie survey written by an anonymous citizen of the Roman Empire living during the reign of Constantius II. The Greek original, composed between AD 350 and 362,Grüll, 2014 p.630. See also §.3: "Dominus orbis terrarum Constantius imperator" is now lost, but comes to us through two Latin translations made during the sixth century.
