Telugu is a Dravidian language, while Khmer, Vietnamese, and Mon are Austroasiatic languages.

Vietnamese is spoken by over 85 million people, making it the most widely spoken Austroasiatic language.

Khmer is the official language of Cambodia and is spoken by over 15 million people.

Vietnamese is the official language of Vietnam and is spoken by over 85 million people.

Mon is spoken by over 1 million people in Myanmar and is one of the country's official languages.

Santali is spoken by over 7 million people in India and is one of the country's official languages.

The Austroasiatic language family is one of the major language families of Southeast Asia.

There are about 100 Austroasiatic languages spoken in Southeast Asia and India.

The Mon-Khmer language family is the largest Austroasiatic language family, with over 100 languages.

The Munda language family is the second largest Austroasiatic language family, with over 20 languages.

The Khmuic language family is the third largest Austroasiatic language family, with over 10 languages.

The Pakanic language family is the fourth largest Austroasiatic language family, with over 5 languages.

Austroasiatic languages face a number of challenges, including lack of resources, government policies that favor dominant languages, and economic development that can lead to the loss of traditional languages.

There are a number of things that can be done to support Austroasiatic languages, including developing educational resources, promoting the use of Austroasiatic languages in media, and advocating for government policies that support Austroasiatic languages.

Supporting Austroasiatic languages is important for a number of reasons, including preserving cultural diversity, promoting economic development, and improving education.