Basically yes.
yes,then everyone could understand each other
it helps them because when they make a mistake they get to understand each other and they say were they went wrong so everyone is happy. (everyone makes mistakes)
How did cavemen understand each other
Same as any language, allow an in-group to understand each other, and to exclude everyone else.
The possibility of nuclear war between America and Russia or China is very low because they understand the consequences of fighting each other.
Chinese people primarily understand each other through the use of Mandarin Chinese, which is the official language of China. Mandarin is spoken by the majority of Chinese people and is taught in schools across the country. In addition to Mandarin, there are also various local dialects spoken in different regions of China.
No, but many understand each others alarm calls.
they helped each other
i have no friend
no
For everyone to be nice to each other.
yes be cuz they can