The Sanatana Dharma was an intruder into Tamil Culture, it was imposed by the Brahmins who crossed over th India through the Khyber Pass, say the Rationalists and The self-styled scholars of Tamil.
Yes , it was imposed to such an extent that the early Tamil literature Ahanaanuru records that the Chera King Udiyan Cheralaathan offered Tharpana to the people killed in the Mahabharata war.
