were swept up in Protestant religious revivals that would later become known as the Second Great Awakening. Presbyterians also helped to shape voluntary societies that encouraged educational, missionary, evangelical, and reforming work. As its influence grew, many non-Presbyterians feared that the PCUSA's informal influence over American life might effectively make it an established church. The Second Great Awakening divided the PCUSA over revivalism and fear that revivalism was leading to an embrace of Arminian theology. In 1810, frontier revivalists split from the PCUSA and organized the Cumberland Presbyterian Church. Throughout the 1820s, support and opposition to revivalism hardened into well-defined factions, the New School and Old School respectively. By the 1838, the Old School–New School Controversy had divided the PCUSA. There were now two general assemblies each claiming to represent the PCUSA. In 1858, the New School split along sectional lines when its Southern synods and presbyteries established the pro-slavery United Synod of the Presbyterian Church. Old School Presbyterians followed in 1861 after the start of hostilities in the American Civil War with the formation of the Presbyterian Church in the Confederate States of America. The Presbyterian Church in the CSA absorbed the smaller United Synod in 1864. After the war, this body was renamed the Presbyterian Church in the United States (PCUS) and was commonly nicknamed the "Southern Presbyterian Church" throughout its history. In 1869, the northern PCUSA's Old School and New School factions reunited as well and was known as the "Northern Presbyterian Church". 20th century to the present The early part of the 20th century saw continued growth in both major sections of the church. It also saw the growth of Fundamentalist Christianity (a movement of those who believed in the literal interpretation of the Bible as the fundamental source of the religion) as distinguished from Modernist Christianity (a movement holding the belief that Christianity needed to be re-interpreted in light of modern scientific theories such as evolution or the rise of degraded social conditions brought on by industrialization and urbanization). Open controversy was sparked in 1922, when Harry Emerson Fosdick, a modernist and a Baptist pastoring a PCUSA congregation in New York City, preached a sermon entitled "Shall the Fundamentalists Win?" The crisis reached a head the following year when, in response to the New York Presbytery's decision to ordain a couple of men who could not affirm the virgin birth, the PCUSA's General Assembly reaffirmed