Explanation – Maharishi Agasthyar is widely regarded as the father of the Tamil language and is credited with compiling the first Tamil grammar text, Agattiyam. He played a pioneering role in the development of Tamil literature and linguistics, as well as in spreading Vedic traditions to South India. Maharishi Agasthyar is considered a pioneer of Siddha medicine.  Agasthyar played a key role in uniting northern and southern Indian cultures by spreading Vedic traditions to South India. Agasthyar is closely associated with Shaivism. The theme for the third edition of the Kashi Tamil Sangamam is the legacy and philosophy of Maharishi Agasthyar.

Source: The Hindu