During Chandragupta Maurya it was not a bunch of Indias . So it was not during various other times and till at the end of Mughal period, maybe a little earliar. Adi Shankracharya established four Mutts through the length and breadth of his country which was not present day Kerala alone.And so did the followers of Shakya Muni before Adi.You must never let this preposterous disinformation repeatedly parroted by our opinioted historions, take root. Ram