: The Centennia Nations Edition is available for free and covers the critical 150-year period from 1789 (the French Revolution) through the eve of WWII in 1939.
The Centennia Historical Atlas is a dynamic, animated map system that tracks over in Europe and the Middle East from 1000 AD to the present. It is highly regarded for its precision, showing map updates in five-week intervals . Accessing the Atlas Centennia historical atlas full access code
The atlas provides a "fast-forward" look at history with several unique details: : The Centennia Nations Edition is available for