What literary period was The Grapes of Wrath written in?

The Grapes of Wrath was written during the Modernist literary period, which spanned from the late 19th century to the mid-20th century. This period was characterized by a break from traditional forms and a focus on themes of social change, alienation, and the human experience, often reflecting the tumultuous events of the time, such as the Great Depression. John Steinbeck's novel, published in 1939, embodies these themes through its portrayal of the struggles faced by displaced families during this era.