Question: Immigrant farm workers during the Dirty Thirties used a route that connected what states?
Sentence (from "Dust Bowl"): The Dust Bowl, also known as the Dirty Thirties, was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s; severe drought and a failure to apply dryland farming methods to prevent wind erosion (the Aeolian processes) caused the phenomenon.
Relevant evidence: Yes