At the surface this is a fun visualization and it confirms some vague stereotypes. A closer inspection shows that the appearance of 'cultural regions' is primarily done by the use of a color scheme that is taken from beyond the data plotted. Note that India and Poland are next to each other in the data space. If you ran a clustering you would find the Indo-Polish cultural group to be very hard to split. That said, I suspect that it would be very hard to convince anyone that India is more like Poland that say Bangladesh, or conversely that Poland is more like India than say Hungary. This map is perhaps a fairly arbitrary reduction in dimensionality.