If you lived on a border of a country that speaks different languages how is it chosen what language you speak? If you lived on the border do you just learn both languages?
Or is it more if you lived even like 500 meters of a border do you learn the language of the country your in? Do people choose it based on nearest popular city to where they’re at?
Such people are sometimes called Grenzemensch (border person). They grow up speaking multiple languages and don’t even realize til they’re older that the languages are different. They just think you have to talk to Uncle Fritz one way and Grandma Mireille a different way.