The Báb was a 19th-century religious leader in Persia, known for founding the Bábí faith. Born as Siyyid `Ali Muhammad Shirazi in 1819, he claimed to be a messenger of God and announced the coming of a new prophet. His teachings emphasized the unity of all religions and the importance of social justice. The Báb's movement faced severe persecution from the Persian authorities, leading to his execution in 1850. His followers, known as the Bábís, later played a significant role in the development of the Bahá'í Faith, which emerged from his teachings and those of Bahá'u'lláh, the founder of the Bahá'í Faith.