Besides China and Taiwan, of what other country is Mandarin an official language?

Standard Mandarin Chinese is one of the four official languages of China, Taiwan, and Singapore. Historically it was rarely used by the Chinese-Singaporean community, which spoke Hokkien, Cantonese, or Hakka. However, in 1979, the government launched the "Speak Mandarin" Campaign to form a closer connection to China.

Asked by Vasilii Kulev · Last updated 4 years ago · 52K views · SOURCE