World War II
World War II is the historical event that, within the narrative world of The Grapes of Wrath, acts as the unseen resolution to the migrant crisis that drives the Joad family's journey. Though the novel itself concludes in the winter of 1938–39, before the war begins, the text's own historical framing and the author's later commentary establish World War II as the force that dismantled the specific economic and social conditions that had created the Dust Bowl migration. The war did not solve the underlying problems of poverty and land ownership, but it did absorb the displaced population into a new, wartime economy, ending the particular era of suffering that Steinbeck chronicled.
Causes and Background
The migrant crisis depicted in The Grapes of Wrath was a direct product of the Great Depression and the Dust Bowl, conditions that World War II would eventually supersede. The novel's intercalary chapters explain how industrial agriculture, bank ownership, and mechanization (the tractor) had pushed tenant farmers off the land, creating a vast, mobile labor force desperate for work. This system, which Steinbeck called "the monster," was built on a surplus of hungry workers that drove wages down. The war economy, with its massive demand for labor in shipyards and defense plants, would create a labor shortage instead, fundamentally altering the power dynamic between growers and workers. The novel's own historical moment is thus bracketed by the Depression on one side and the war on the other, even though the characters themselves do not live to see the change.
What Happens
The war's impact on the migrant population is described in the novel's introduction and notes, not in the narrative itself. The text states that "the creation of compulsory military service, and the inevitable recruitment of migrant families into defense plant and shipyard jobs caused by the booming economy of World War II that signaled the beginning of their successful assimilation" ended the particular set of epochal conditions that had crystallized Steinbeck's awareness. The war did not merely provide jobs; it fundamentally restructured the labor market. California growers, who had previously enjoyed a limitless supply of cheap labor, "soon complained of an acute shortage of seasonal labor" as former migrants took higher-paying industrial jobs. The war thus accomplished what strikes and organizing could not: it gave the Okies economic leverage.
Consequences and Aftermath
The war's resolution of the migrant crisis was not a moral or political victory but an economic accident of history. The novel's introduction notes that the "particular set of epochal conditions that crystallized Steinbeck's awareness about the white homeless underclass in the first place passed from his view" because of the war. The migrants did not win their rights through collective action; they were absorbed into a larger national mobilization. This outcome is deeply ironic given the novel's own call for solidarity and its warning that "the grapes of wrath are filling." The war did not address the fundamental injustice of land ownership or the power of the "great owners"; it simply made those issues temporarily irrelevant by creating a labor shortage. The novel's ending, with Rose of Sharon's gift of breast milk to a starving stranger, remains a gesture of individual compassion in a world that has not yet been transformed by the war's economic upheaval. The war, in this reading, is the deus ex machina that resolves the plot without resolving the problem.