Hi

Do you all know what free softwares should I use to make maps of:

*ethnic distribution, very detailed map like this one: https://en.wikipedia.org/wiki/File:A...ary_ethnic.svg

*Linguistic distribution, like this one: https://en.wikipedia.org/wiki/File:C..._languages.png

*Territorial division, like this one: https://en.wikipedia.org/wiki/File:HRR_1789_EN.png

I don't mean to make maps of Germany, but instead, of South China using only free software. I would make them and then upload on Wikipedia.
Thanks for any advice beforehand.