City names and administrative regions adapted from GeoNames (https://www.geonames.org/), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
Source: cities15000 and admin1CodesASCII, retrieved 7 October 2026.
Adaptation: grouped by ISO country, reduced to city/region, ordered by population, deduplicated, and supplemented with the original Spanish city fallback.