Answer:
To describe a family’s difficulties during westward migration.
Step-by-step explanation:
John Steinbeck's "The Grapes of Wrath" is a realist novel that shows the real struggles and difficulties that families had to suffer and endure during the Great Depression. The tenant farmers are the greatest sufferers of this economic fall, which Steinbeck focused through the family of the Joads.
The story details the lives of the the tenant farmers of the plantation fields who are evicted and left with no jobs. They had to go to different parts of the country, looking for work and also a place to stay at the same time, a possible future and dignity after the failure of their previous homes. Through the detailing of their life, Steinbeck intents to describe a family's difficulties during the westward migration.