Mark Twain, writer of The Adventures of Huckleberry Finn, lived in the second half of the 19th century. It was a period in which slavery contrasted with the spirit of equality and freedom, the chief ideology of America. After the Civil War, slavery was abolished, but the harmful effects and segregated social atmosphere in which African-Americans were abused persisted. Slavery was the impetus for the Civil War. The war revealed the differences between the South and North, the pursuit of material possessions, and increased conflicts between white people and the successful class and African-Americans. Against this background, The Adventures of Huckleberry Finn showcases the society of the South, racial conflict, and the pursuit of ethical development through Huck, a 14-year-old boy. The Adventures of Huckleberry Finn consists of various stories in which Huck escapes from the society that restrains him and meets Jim, a slave, and their experiences as they travel along the Mississippi. Mark Twain criticizes the customs and harmful effects of civilized society through this work and shows Huck’s will to achieve ethical maturity. Nature plays a role throughout Huck’s journey and is a friend to him, helping to show the completion of his ethical maturity. Huck escapes from a riverside village and civilized society, as shown through the roles of the river and raft. Ultimately through all circumstances, Huck experiences progresses in his pursuit of mental development.