Hinduism is the largest non-missionary religion in the world. It is the religion that has best preserved itself against the missionary onslaught, having held back both Islam and Christianity, which have attacked it with military, economic and religious force for centuries.

In this regard Hinduism fared better than Buddhism. Islam eliminated nearly all traces of Buddhism from Central Asia where it was strong in the pre-Islamic era. The main parts of India where Islam spread like Sind and Bengal had strong Buddhist communities as well, which were not able to preserve themselves. Similarly Buddhist countries in Asia like Korea and Taiwan are quickly becoming Christianized.