Question

why people of different countries look different?​

Answer 1

Answer:

Because they have different culture, tradition, language etc.....

Answer 2

Answer:

The cross-race effect (sometimes called cross-race bias, other-race bias or own-race bias) is the tendency to more easily recognize faces that are most familiar. A study was made which examined 271 real court cases. In photographic line-ups, 231 witnesses participated in cross-race versus same-race identification. In cross-race lineups, only 45% were correctly identified versus 60% for same-race identifications.