Boundary geometry: © OpenStreetMap contributors, via geoBoundaries.
Dataset: MNG-ADM1-14279143; year represented 2017; pinned revision 9469f09.
Open Data Commons Open Database License 1.0: https://opendatacommons.org/licenses/odbl/1-0/
Source copyright: https://www.openstreetmap.org/copyright
Source metadata: https://www.geoboundaries.org/api/current/gbOpen/MNG/ADM1/
Modified for display by shared-boundary simplification and reindexed using NSO identifiers.
This notice covers the separately stored boundary and derived adjacency database, not the independently authored game code.