sentences:  The period between 400 CE and 1000 CE thus saw gains by the Vedanta school of Hinduism over Buddhism and Buddhism had vanished from Afghanistan and north India by early 11th century.India was now Brahmanic, not Buddhistic; Al-Biruni could never find a Buddhistic book or a Buddhist person in India from whom he could learn.According to some scholars such as Lars Fogelin, the decline of Buddhism may be related to economic reasons, wherein the Buddhist monasteries with large land grants focussed on non-material pursuits, self-isolation of the monasteries, loss in internal discipline in the "sangha", and a failure to efficiently operate the land they owned.