One of Steinbeck's major themes in the novel is that America was undergoing great change during period. Is America still undergoing great change or have we reached a point where change is in much smaller thing? Give examples to support either positions

I'm not an expert on American socio-economic evolution but I would think the mechanized revolution, like in agribusiness, is not at play in the same way as in the 1930's. The type and scale of human displacement is certainly different today. There are still migrant workers and many of them are exploited but in a different context than in the Grapes of Wrath. Many farm workers today are foreign or illegal immigrants. Many of these stories come with sad emotional baggage but not in the same way as the huge migration from the dust bowl seen in the Grapes of Wrath.