The Baháʼí Faith is a religion established by Baháʼu'lláh in the 19th century that teaches the essential worth of all religions and the unity of all people. It initially developed in Iran and parts of Western Asia, where it has faced ongoing persecution since its inception. The religion has 7–8 million adherents, known as Baháʼís, who are spread throughout most of the world's countries and territories.