The concept and term "National Awakening" (in Greek "Εθνική αφύπνιση") is used by many historians, intellectuals and lay authors to refer to the revival of the Greek national self-conscious, or modern Greek nationalism, which paved the way to the Greek Revolution of 1821. Whereas most authors do not define the exact time-frame of this period, it is generally agreed that this awakening (or revival) occurred in the 18th century.