The Bahá'í Faith is a monotheistic religion founded in the 19th century by Bahá'u'lláh in Persia, now Iran. It emphasizes the unity of all religions and the oneness of humanity, teaching that all major world religions come from the same divine source. Followers, known as Bahá'ís, believe in the importance of global peace, equality, and social justice. Central to the Bahá'í teachings is the concept of progressive revelation, which suggests that God sends messengers, or Manifestations of God, throughout history to guide humanity. Key figures include Jesus Christ, Muhammad, and Buddha, each contributing to the spiritual evolution of society.