Great Awakening: A religious revival movement that swept across the American colonies in the 18th century, emphasizing personal salvation, emotional preaching, and individual piety.
Second Great Awakening: A widespread religious revival movement that took place in the early 19th century, emphasizing personal conversion experiences, social reform efforts, and an emphasis on morality.
Social Gospel Movement: A Christian movement in the late 19th and early 20th centuries that sought to apply Christian principles to social problems such as poverty, inequality, and labor exploitation.