How to add borders inside area using Google map

How to add borders inside area using Google map if we know Lat and Long.
an example: https://latitude.to/articles-by-country/fr/france/1382/burgundy
I try to add borders inside particular area. An example:
https://en.wikipedia.org/wiki/Burgundy

You can do it using the API, but I’ve never attempted it.

Named boundaries supposedly work, but I don’t know if they get that specific

Thnak you for the message!

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