The Second Great Awakening was a Protestant religious revival during the early 19th century in the United States. The Second Great Awakening, which spread religion through revivals and emotional preaching, sparked a number of reform movements. Revivals were a key part of the movement and attracted hundreds of converts to new Protestant denominations. The Methodist Church used circuit riders to reach people in frontier locations. The Second Great Awakening led to a period of antebellum social reform and an emphasis on salvation by institutions. The outpouring of religious fervor and revival began in Kentucky and Tennessee in the 1790s and early 1800s among the Presbyterians, Methodists and Baptists. The awakening brought comfort in the face of uncertainty as a result of the socio-political changes in America.