Ancient India

That depends upon your definition of religion. Because Buddhists do not believe in a diety, some people do not consider Buddhism a religion. People do combine Buddhist practice with other religious beliefs. The Dalai Lama, the spiritual leader of Tibetan Buddhists, has stated that anyone who feels drawn to Buddhism does not need to convert. Whether or not Buddhism is a religion or a philosophy, or more likely a combination of both, is not important to Buddhists. What is important is that they live their life in a caring way, try their best to avoid hurting others, and practice tolerance. Buddhism for Kids