African American literature is the body of literature produced in the United States by writers of African descent. It begins with the works of such late 18th-century writers as Phillis Wheatley. Before the high point of slave narratives, African-American literature was dominated by autobiographical spiritual narratives. The genre known as slave narratives in the 19th century were accounts by people who had generally escaped from slavery, about their journeys to freedom and ways they claimed their lives. The Harlem Renaissance of the 1920s was a great period of flowering in literature and the arts, influenced both by writers who came North in the Great Migration and those who were immigrants from Jamaica and other Caribbean islands. African American writers have been recognized by the highest awards, including the Nobel Prize given to Toni Morrison in 1993. Among the themes and issues explored in this literature are the role of African Americans within the larger American society, African-American culture, racism, slavery, and social equality. African-American writing has tended to incorporate oral forms, such as spirituals, sermons, gospel music, blues, or rap. As African Americans' place in American society has changed over the centuries, so has the focus of African-American literature. Before the American Civil War, the literature primarily consisted of memoirs by people who had escaped from slavery; the genre of slave narratives included accounts of life under slavery and the path of justice and redemption to freedom. There was an early distinction between the literature of freed slaves and the literature of free blacks born in the North. Free blacks expressed their oppression in a different narrative form. Free blacks in the North often spoke out against slavery and racial injustices by using the spiritual narrative. The spiritual addressed many of the same themes of slave narratives, but has been largely ignored in current scholarly conversation. At the turn of the 20th century, non-fiction works by authors such as W. E. B. Du Bois and Booker T. Washington debated how to confront racism in the United States. During the Civil Rights Movement, authors such as Richard Wright and Gwendolyn Brooks wrote about issues of racial segregation and black nationalism. Today, African-American literature has become accepted as an integral part of American literature, with books such as Roots: The Saga of an American Family by Alex Haley, The Color Purple (1982) by Alice Walker, which won the Pulitzer Prize; and Beloved