American literature since 1860 has been shaped by major historical events and social movements. From the Civil War to the Civil Rights Movement, authors have grappled with themes of identity, social change, and the American experience. Key figures like Walt Whitman, Emily Dickinson, and Mark Twain laid the groundwork for diverse literary movements. Realism, modernism, and postmodernism emerged, reflecting shifting cultural attitudes and artistic innovations throughout the late 19th and 20th centuries.