Mormon migration refers to the movement of members of the Church of Jesus Christ of Latter-day Saints (often called Mormons) from the eastern United States to the western territories during the 19th century. This migration was largely driven by the search for religious freedom, as Mormons faced persecution in places like Illinois and Missouri. The most significant migration occurred between 1846 and 1868, when thousands traveled to the Salt Lake Valley in present-day Utah. Led by figures such as Brigham Young, these pioneers established communities and built a thriving society in the region, which became a central hub for the Mormon faith.