You could have downloaded Centennia 3.10 for Mac from our software library for free. This app's bundle is identified as com.HistoricalAtlas.Centennia. The following version: 3.1 was the most frequently downloaded one by the program users. The program is categorized as Education Tools. The most frequent installer filename for the program is: centennia_macintosh_osx.dmg. This Mac application is a product of Centennia Software.
From the developer:
CENTENNIA is a map-based guide to the history of Europe and the Middle East from the beginning of the 11th century to the present. It is a dynamic, animated historical atlas including over 9,000 border changes. The map controls evolve the map forward or backward in time bringing the static map to life. Our maps display every major war and territorial conflict displaying the status of each region at intervals of a tenth of a year.
You may want to check out more Mac applications, such as Periodis Expert English Demo, which might be related to Centennia.