Why and How did Jainism and Buddhism decline in India?

Jainism and Buddhism never declined and will never decline as they are both sanatan dharmas along with hinduism. Talking of India, being a diverse country it has a touch of everything . People preferred other religions to these two because they found the practices involved in these two quite harsh. read more

Ruins of Nalanda University; its destruction is considered a milestone in the decline of Buddhism in India. A steady decline of Buddhism in the Indian subcontinent set in during the 1st millennium CE in the wake of the White Hun invasion followed by Turk-Mongol raids, though it continued to attract financial and institutional support during the Gupta era (4th to 6th century) and the Pala Empire (8th to 12th century). read more