Answer:slake hands with someone.
An do not stand close enough to a stranger to touch arms
Explanation:
Answer:
Scholars generally agree that the earliest form of writing appeared almost 5,500 years ago in Mesopotamia (present-day Iraq). Early pictorial signs were gradually substituted by a complex system of characters representing the sounds of Sumerian (the language of Sumer in Southern Mesopotamia) and other languages.
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Researchers from Durham University explain that the uniquely expressive power of human language requires humans to create and use signals in a flexible way. They claim that his was only made possible by the evolution of particular psychological abilities, and thus explain why language is unique to humans.
Source: https://royalsociety.org/news/2013/language-unique-humans/
Languages can differ in many ways. They may use different sounds, they may make words in different ways, they may put words together to form a sentence in different ways, and that's just for starters! ... Dialects of a language may vary in terms of accents, the words people use, the way people structure their speech.
Source: https://lingroadshow.com/all-about-language/languages-of-the-world/how-can-languages-differ/
