| | Description: Map showing the Roman Empire under Diocletian (284-305 A.D.) showing the Four Prefectures, color-coded to distinguish between the four prefectures. Place Names: Egypt, Greece, Italy, Mauritania, Sicily, Spain,
 ISO Topic Categories: oceans, location, inlandWaters
 Keywords: The Roman Empire under Diocletian (284-305 A.D.) showing the Four Prefectures, borders, physical, oceans, location, inlandWaters, Unknown,
 Source: James Henry Breasted, Ph.D., LL.D., Ancient Times - A History of the Early World (Boston, MA: Ginn and Company, 1916)
 Map Credit: Courtesy The Private Collection of Roy Winkelman
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