Dio's Rome V4 is a historical book written by Cassius Dio, a Roman historian and politician who lived during the second and third centuries AD. The book is the fourth volume of Dio's Roman History, which covers the period from the reign of Augustus to the death of Commodus. In this volume, Dio focuses on the reigns of the emperors Nerva, Trajan, Hadrian, and Antoninus Pius. He provides a detailed account of their lives and reigns, including their...