The Great Awakenings refer to several periods of rapid and dramatic religious revival in Anglo-American religious history, generally recognized as beginning in the 1730s. They have also been described as periodic revolutions in U.S. religious thought. The term is also used in some respects to refer to American religious revivalism that the Protestant Reformation inspired during and after the 1500s, as well as to identify general religious trends within distinctly U.S. religious culture.