How old is Tamil language?

Context: Tamil is one of the longest-surviving classical languages of India. A. K. Ramanujan described it as "the only language of contemporary India which is recognizably continuous with a classical past". The variety and quality of classical Tamil literature has led to it being described as "one of the great classical traditions and literatures of the world". Recorded Tamil literature has been documented for over 2000 years. The earliest period of Tamil literature, Sangam literature, is dated from c. 300 BC until AD 300. It has the oldest extant literature among Dravidian languages. The earliest epigraphic records found on rock edicts and 'hero stones' date from around the 3rd century BC. About 60,000 of the approximately 100,000 inscriptions found by the Archaeological Survey of India in India are in Tamil Nadu. Of them, most are in Tamil, with only about 5 percent in other languages. Tamil language inscriptions written in Brahmi script have been discovered in Sri Lanka and on trade goods in Thailand and Egypt. The two earliest manuscripts from India, acknowledged and registered by the UNESCO Memory of the World register in 1997 and 2005, were written in Tamil.

Answer: Tamil language is one of the oldest and longest surviving classical language and is existing from 300 BC. Tamil as a literature has been documented for over 2000 years. Earliest epigraphic records found on rocks date back to 3rd century BC. It is also the official language of Singapore and Sri lanka apart from Tamil Nadu state in India.