With the national language. Generally divided into 3 categories: 1.2), Monolingual and Bilingual library) 3.) in fact, Multilingual country of monolingual, almost does not exist because almost every country around the world is the language used to communicate within the country from 2 or more languages, Bilingualism means society khe.And bilingual and can communicate using both languages fluent. It does not mean that everyone must speak both languages. Moreover, the two languages may have different or similar it. By the two languages must be a standard language, such as English and French both in Canada by both these languages may be used as a language of the same (different from the diglossia that has 2 language patterns in the same language) or both languages might not be related at all, such as Spanish and Guarani in Paraguay, etc.
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