The background
The Romantic movement, which originated in Germany but quickly spread to England, France, and beyond, reached America around the year 1820, some 20 years after William Wordsworth and Samuel Taylor Coleridge had revolutionized English poetry by publishing Lyrical Ballads. In America as in Europe, fresh new vision electrified artistic and intellectual circles. Yet there was an important difference: Romanticism in America coincided with the period of national expansion and the discovery of a distinctive American voice. The solidification of a national identity and the surging idealism and passion of Romanticism nurtured（补养） the masterpieces of "the American Renaissance."