I had written quite a number of articles on the languages of India, especially Sanskrit and Tamil and how they run parallel with each other, supporting and complimenting each other.Not only that,they had taken Sanatan dharma throughout the world, despite misinformation that Tamil is anti- Sanskrit and Anti-Sanatan Dharma.
Prakrit was the language of the common people in ancient India and was spoken throughout India along with Tamil.Tamil Brahmi script was found in Indus civilization and Sanskrit and Sanskrit Brahmi,Prakrit is found in ancient sites and Epigraphs in South India Temples.It is customary for the Kings to record information in both Prakrit/ Sanskrit and Tamil in Epigraphs.Tamil is found in northwestern province in Pakistan and Balochistan.Chola Emperor Sibi ruled from Sibi in North West province.It was his second capital.Kosars are one of the earliest Tamils and they were spread throughout India, mainly in Karnataka,Tulu,Konkan,Maratha region,Odisha,and Central India. They are responsible for building Kosambi,associated with Buddha.
Dravidian is a family of languages spoken by 220 million people, mainly in southern India and northern Sri Lanka, with pockets elsewhere in South Asia. Since the colonial era, there have been small but significant immigrant communities outside South Asia in Mauritius, Hong Kong, Singapore, Malaysia, Indonesia, Philippines, Britain, Australia, France, Canada, Germany and the United States..The Dravidian languages are first attested in the 2nd century BCE as Tamil-Brahmi script inscribed on the cave walls in the Madurai and Tirunelveli districts of Tamil Nadu.[a] The Dravidian languages with the most speakers are (in descending order of number of speakers) Telugu, Tamil, Kannada and Malayalam, all of which have long literary traditions. Smaller literary languages are Tulu and Kodava. There are also a number of Dravidian-speaking scheduled tribes, such as the Kurukh in Eastern India and Gondi in Central India.
Only two Dravidian languages are spoken exclusively outside the post-1947 state of India: Brahui in the Balochistan region of Pakistan and Afghanistan; and Dhangar, a dialect of Kurukh, in parts of Nepal and Bhutan. Dravidian place names along the Arabian Sea coasts and Dravidian grammatical influence such as clusivity in the Indo-Aryan languages, namely, Marathi, Gujarati, Marwari, and Sindhi, suggest that Dravidian languages were once spoken more widely across the Indian subcontinent. https://en.m.wikipedia.org/wiki/Dravidian_languages