The CENTENNIA Historical Atlas is a map-based guide to the history of Europe and the Middle East from the year 1000AD to the beginning of the 21st century. Centennia displays today's complex geo-political events in the long view of historical perspective --the "long now". It is a dynamic, animated historical atlas including nearly 10,000 border changes. The map controls evolve history forward or backward in time bringing the static map to life. The "Centennia Historical Atlas" covers every major war and territorial conflict displaying the status of each region at intervals of a tenth of a year. The maps reflect actual "power on the ground" --who owns what territory, who's in charge, and not merely who has "de jure" right to the land. The Centennia Historical Atlas has been required course material for all students at the US Naval Academy in Annapolis, Maryland for many years. It is now available to students of history and historians of all ages.