Many countries, through the use of censuses, enumerate their populations by languages and by their level of competence in using those languages. == Afghanistan == Pashto and Dari (Persian) are the official languages of Afghanistan; bilingualism is very common.
Many countries, through the use of censuses, enumerate their populations by languages and by their level of competence in using those languages. == Afghanistan == Pashto and Dari (Persian) are the official languages of Afghanistan; bilingualism is very common.
Source: Wikipedia "Languages in censuses" · CC BY-SA 4.0
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