Hinduism is a very old religion from India that is still practiced today. It was one of the first religions that had the idea of reincarnation (that people can be born again after death), karma (one event invents another, or that every action has its consequences), and other ideas.
Vegetarianism is strongly linked with a number of religions that originated in ancient India (Jainism, Hinduism and Buddhism). In Jainism, vegetarianism is mandatory for everyone; in Hinduism and Mahayana Buddhism, it is advocated by some influential scriptures and religious authorities.