What is one reason steinbeck uses parallelism in the grapes of wrath?

One reason Steinbeck uses parallelism in "The Grapes of Wrath" is to emphasize the interconnectedness of characters and events in the story. By repeating similar themes, situations, or phrases throughout the novel, Steinbeck shows how different characters are experiencing similar struggles and challenges as they migrate to California in search of a better life. This parallelism highlights the universality of the Joad family's struggles and the common humanity shared by all individuals facing hardship during the Great Depression. It also reinforces the idea that individual actions have larger societal consequences and that the Joad family's story is representative of the experiences of many other families during that time period.