Who was the founder of Advaita vada or the doctrine of non-dualism?

Who was the founder of Advaita vada or the doctrine of non-dualism? Correct Answer Adi Shankaracharya

Adi Shankara was the founder of the Dashanami monastic order and the Shanmata tradition of worship. His works in Sanskrit, all of which are extant today, concern themselves with establishing the doctrine of Advaita (Sanskrit, "Non-dualism").

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