Tamil and Telugu belong to the Dravidian language family.
Most European languages belong to the Indo-European language family.
Vietnamese belongs to the Austroasiatic language family.
Sanskrit belongs to the Indo-European language family.
French is a Romance Language.
They are all members of the Centum branch of the Indo-European language family.
English and Italian both belong to the Indo-European language family. More specifically, Italian is considered a Romance language while English is Germantic.
India
Georgian is included in one of the small language families of Caucasus - South Caucasian languages. The other languages of the family are unwritten or mostly unwritten, and their speakers use Georgian or Turkish as their written language. The most important of those languages is Mingrelian (Megreli, Margaluri).
The English language belongs to the Germanic language family, which is a branch of the Indo-European language family. Other languages in the Germanic family include German, Dutch, and Swedish.
Chinese
Sanskrit belongs to the Indo-European language family, specifically in the Indo-Iranian branch.