Hinduism emerged in India around the third millennium B.C. Hindus follow a strict moral code or sacred obligation that prescribes a dutiful way of life. Hinduism is characterized by a rigid caste system that originated around 1500 B.C. with the Aryan invaders who established the system to separate themselves from the natives. The system evolved into four castes called Varnas. A person born into a particular caste works, marries, and associates stictly within that caste. Therefore, in Hinduism each person has a place and a duty. Hinduism also teaches belief in reincarnation, life after death. Hindus beleive that actions in this life affect Karma, or one's next life. A perfected soul, someone who has reached the highest good or moral virute acheives Moksha or paradise.