Why is Hinduism only prevalent in India?

NewsFlash : All religions were spread by Humans. It was either through war or by proselytizing. Islam and Christianity would have remained as a tiny localized religion in the Middle East had the descendants did not spread across the globe trying to convert people of other faiths. read more

Buddhism was even prevalent in India for about a 1000 years, patronized by the Mauryan Empire, before it got wiped out from its land of origin, due to a Hindu philosophical revival during the Gupta Empire. read more

Hinduism is the largest religion in India, with 79.8% of the population identifying themselves as Hindus, that accounts for roughly (966 million) Hindus in India as of 2011 Census of India, while 14.2% of the population follow Islam and the remaining 6% adhere to other religions (such as Christianity, Sikhism, Buddhism, Jainism, various indigenous ethnically-bound faiths, Atheism and Irreligion). read more