Personalities in each one. Ethnicity and language. Self esteem religious complexion, born or even as all of these factors, that is, each person on this planet in potentially different.
Each character in Race and language Religious self-esteem Skin Naturally Or even as All these factors are making each person on this planet was different.
Characteristics in each nation and the use of language, religion self esteem, colour by birth, or even status. All the factors that lead to each person in the world is different.