Does that sound a little funny to you?
What kind of study prepares you for that? It's closest to cultural anthropology. I would expect it to come easy to sociologists and psychologists with interests in the matter.
Even between The Netherlands and Belgium, there are subtle differences that can be the difference between a deal and a failure. Learn those in a few one hour seminars and the mutual understanding and relationships get easier, or at least not unnecessarily complicated by misunderstandings that can be avoided. On the contrary, within a much larger country like France, even though there are differences and dislikes, especially between north and south, people tend to understand each other better. In Europe, these differences follow borders pretty well.
how to speak to a black female Texan at a business luncheon?