> "You can find families that live right next door to each other, have exactly the same education levels, exactly the same income and even exactly same religion.

However, because they speak a different language they might have gone to different schools, have a different sense of humor, watch different TV channels, read different newspapers, and be interested in the events or culture of different countries.

Moreover, in a few of the countries listed the different language groups tend to live in different regions, which can have very different economies.