Vietnamese is a member of the Vietic branch of the Austroasiatic
language family. It is spoken mainly in Vietnam by about 73.6
million people. There are another 3.2 million Vietnamese
speakers in other countries, including 1.4 million in the USA,
817,800 in Cambodia, 277,000 in Australia, 194,000 in Taiwan,
156,000 in Canada and 101,000 in Malaysia.
It is the native language of the Vietnamese (Kinh) people, as well
as a second language or first language for other ethnic groups in
Vietnam. As a result of emigration, Vietnamese speakers are also
found in other parts of Southeast Asia, East Asia, North America,
Europe, and Australia. Vietnamese has also been officially
recognized as a minority language in the Czech Republic.
Vietnamese is the sole official and national language of Vietnam.
It is the first language of the majority of the Vietnamese
population, as well as a first or second language for the country's
ethnic minority groups.
Traditionally Vietnamese is classified as a member of the Mon-
Khmer branch of the Austroasiatic language family. However,
recently linguists have proposed that Vietnamese and Muong
should be classified as a separate branch of that family, called
Vietic or Viet-Muong. Vietnamese is also known as Annamese,
Ching, Gin, Jing, Kinh or Viet. The native name is tiếng việt
("Vietnamese language"). The main dialects are Northern, Central
and Southern, and in each region there are numerous
subdialects.
Vietnamese is increasingly being taught in schools and
institutions outside of Vietnam, a large part which is contributed
by its large diaspora. In countries with strongly established
Vietnamese-speaking communities such as the United States,
France, Australia, Canada, Germany, and the Czech Republic,
Vietnamese language education largely serves as a cultural role
to link descendants of Vietnamese immigrants to their ancestral
culture. Meanwhile, in countries near Vietnam such as Cambodia,
Laos, and Thailand, the increased role of Vietnamese in foreign
language education is largely due to the recent recovery of the
Vietnamese economy.
Sources: Wikipedia
https://omniglot.com/writing/vietnamese.htm