Synopsis Extent of Empire and Administration Social Condition, Religion, Art and Architecture, Literature. As in common practice, the history of Orissa has been divided into ancient, medieval and modern periods by all the historians and researchers. The Ancient historian often meets with the problem arising from the paucity of materials while the scholar researching into the modern phase is beffled by the bewildering details on political history. For a scholar of medieval Orissa there is neither so much of depression nor of excitement over the detail. Yet medieval Orissa does not seem to be well looked into inspite of a plethora of monographs and a few dissertations that throw light on it. The present project is intended to investigate The History of the Imperial Ganga dynasty which ruled over Orissa from 1112 A.D. to 1435 A.D.