I'm Italian and we have a similar situation, things like e.g. heated rivalry between two towns that are 15 km apart. This can go very deep because as you know

I'm Italian and we have a similar situation, things like e.g. heated rivalry between two towns that are 15 km apart. This can go very deep because as you know (but may be surprising to our American friends) in Europe we have much less cultural uniformity. For example, in the two towns in Central Italy that I'm thinking about, which are only 15 km apart, people speak completely different dialects that are only partially intelligible one another. A fun fact is that now I live in Australia which is one of the countries in the world with the least variance in accent. You can't tell Sydney and Perth accents apart, even though the two cities are thousands of kms apart.