A Sikh is a follower of Sikhism, a monotheistic religion founded in the late 15th century in Punjab, India, by Guru Nanak Dev Ji. Sikhism emphasizes the belief in one God, equality among all people, and the importance of community service and devotion. Sikhs are recognized by their distinctive practices, including the wearing of the turban and the five articles of faith known as the Five Ks. The central religious scripture is the Guru Granth Sahib, which contains the teachings of the Sikh Gurus and other saints.