Turkey province boundaries, ODbL 1.0.
Source: https://github.com/theaiagent/turkiye_iller_geojson
Underlying geometries: OpenStreetMap contributors; https://github.com/cihadturhan/tr-geojson
https://opendatacommons.org/licenses/odbl/1-0/
The redistributed boundary database remains available in turkey-provinces.geojson under ODbL. Geographic visualization only, not cadastral boundaries or a legal survey.