New Facebook Page: https://www.facebook.com/OsmaniTheOttoman/
The cartographic data Euratlas Historical Polities are now available for the year 300. Remember that you can switch between years 300, 1200 and 1900 by choosing the correct field at the top of the screen.
Of course the map is zoomable and you can select an entity or place to display its details in the left tab. You can also superimpose a modern OpenStreetMap by choosing its layer on the upper right corner.
You can browse the map and select any polity, overlordship or sub-polity and display the chosen polities in a graph.
A more accurate explanation here:
Historical Polities Year 300:
https://hpolities.euratlas.net/300
New Facebook Page: https://www.facebook.com/OsmaniTheOttoman/