The Baháʼí Faith is a religion founded in the 19th century that teaches the essential worth of all religions and the unity of all people. Established by Baháʼu'lláh, it initially developed in Iran and parts of the Middle East, where it has faced ongoing persecution since its inception. The religion is estimated to have 5–8 million adherents, known as Baháʼís, spread throughout most of the world's countries and territories. The Baháʼí Faith has three central figures: the Báb (1819–1850), considered a herald who taught his followers that God would soon send a prophet similar to Jesus or Muhammad and who was executed by Iranian authorities in 1850; Baháʼu'lláh (1817–1892), who claimed to be that prophet in 1863 and faced exile and imprisonment for most of his life; and his son, ʻAbdu'l-Bahá (1844–1921), who was released from confinement in 1908 and made teaching trips to Europe and the United States. After ʻAbdu'l-Bahá's death in 1921, the leadership of the religion fell to his grandson Shoghi Effendi (1897–1957). Baháʼís annually elect local, regional, and national Spiritual Assemblies that govern the religion's affairs, and every five years...