The Church of Jesus Christ of Latter-day Saints firmly established itself in South America in 1925, when three General Authorities arrived in Buenos Aires to open the South American Mission. The continent was dedicated for the preaching of the gospel by Elder Melvin J. Ballard on Christmas Day in 1925. Early subsequent efforts focused on German immigrants, but missionaries soon discovered that Spanish- and Italian-speaking communities were more receptive. Visionary leaders like David O. McKay and Reinhold Stoof laid the foundations that would later support thriving congregations in Argentina and Brazil. In this interview, historian Mark Grover explores the challenges and milestones in South America that have contributed to today’s global Mormonism.