The Latter Day Saint movement (also called the LDS movement, LDS restorationist movement, or Smith–Rigdon movement) is the collection of independent church groups that trace their origins to a Christian Restorationist movement founded by Joseph Smith in the late 1820s.
Collectively, these churches have over 16 million members, with about 98% belonging to the Church of Jesus Christ of Latter-day Saints (LDS Church). The predominant theology of the churches in the movement is Mormonism, which sees itself as restoring again on Earth the early Christian church; an additional doctrine of the church allows for prophets to receive and publish modern-day revelations.
A minority of Latter Day Saint adherents, such as members of Community of Christ, have been influenced by Protestant theologies while maintaining certain distinctive beliefs and practices including continuing revelation, an open canon of scripture and building temples. Other groups include the Remnant Church of Jesus Christ of Latter Day Saints, which supports lineal succession of leadership from Smith's descendants, and the more controversial Fundamentalist Church of Jesus Christ of Latter-Day Saints, which defends the practice of polygamy.
The movement began in western New York during the Second Great Awakening when Smith said that he received visions revealing a new sacred text, the Book of Mormon, which he published in 1830 as a complement to the Bible. Based on the teachings of this book and other revelations, Smith founded a Christian primitivist church, called the "Church of Christ". The Book of Mormon attracted hundreds of early followers, who later became known as "Mormons", "Latter Day Saints", or just "Saints". In 1831, Smith moved the church headquarters to Kirtland, Ohio, and in 1838 changed its name to the "Church of Jesus Christ of Latter Day Saints".
After the church in Ohio collapsed due to a financial crisis and dissensions, in 1838, Smith and the body of the church moved to Missouri. However, they were persecuted and the Latter Day Saints fled to Illinois.