Answer:
More Americans became aware of the problems of migrants.
Step-by-step explanation:
John Steinbeck, Dorothea Lange, and Woody Guthrie were all immigrants to America and their works in various ways highlighted the problems facing immigrants.
For instance, Woody Guthrie write a song which mirrored the racial injustice faced by passengers before and after a plane crash.
Their efforts made more Americans become aware of the problems of migrants.