GeoJSON
In this Repo I uploaded 3 level administration maps of Countries in low and high quality GeoJSON files
- You can check them on http://geojson.io/
- Reduse their resultion on the https://mapshaper.org/
- For rest of countries https://gadm.org/download_country_v3.html
- Creating GeoJSON https://stackoverflow.com/a/24871449
- GeoJSON for other countries http://code.highcharts.com/mapdata/