Sikhism
Sikhism is a monotheistic religion founded in 15th-century Punjab by Guru Nanak, emphasizing equality, service to others, and devotion to one God.
Sikhism was founded by Guru Nanak around 1500 CE and further developed by nine successive Sikh Gurus, with the tenth and final human Guru, Guru Gobind Singh, establishing many of the tradition's distinctive practices before designating the Sikh scripture as the eternal Guru.
Central Sikh teachings emphasize the oneness of God, equality among all people regardless of caste or gender, and a strong commitment to selfless service, reflected in the tradition of community kitchens (langar) found at Sikh temples (gurdwaras) worldwide.
Many baptized Sikhs observe the Five Ks, articles of faith including uncut hair and a turban, and today Sikhism has roughly 25-30 million adherents worldwide, with the Golden Temple in Amritsar, India, serving as its holiest site.