Credits

Map

Map data © OpenStreetMap contributors, available under the Open Database License. Vector tiles by OpenFreeMap, built on the OpenMapTiles schema. Map display by MapLibre (BSD licence).

Population

Population 2025: GHSL, European Commission Joint Research Centre (CC BY 4.0), regridded to one arc-minute cells.

Relief

Elevation: Terrain Tiles by Mapzen, hosted on Amazon Open Data, built from SRTM, GMTED, ETOPO1 and other public datasets.

Games

Historical borders: OpenHistoricalMap contributors (CC0); France in 1789 (provinces, généralités, pays, bailliages): Gay, Gobbi & Goñi (2024), after Armand Brette (CC BY 4.0); historic counties of the United Kingdom: Historic County Borders Project. Administrative borders today: OpenStreetMap contributors (ODbL). Cities and population: GHSL, European Commission Joint Research Centre (CC BY 4.0). World outlines: Natural Earth (public domain). Facts and figures: Wikidata (CC0).