Final answer:
The movie Crossroads is not related to the question, but the Great Migration was a period when African Americans moved to the North after the Civil War to find better opportunities and to escape Southern oppression.
Step-by-step explanation:
Willie Brown and Eugene Martone, the characters from the movie Crossroads, are not the subject of the provided reference materials. The movie plotline revolves around a blues guitarist and a young apprentice journeying to a fabled crossroads in Mississippi. However, the references provided discuss historical and sociopolitical dynamics within the African American community post-Civil War and during the Civil Rights Movement, notably the two classes of colored Americans and their criticisms towards Booker T. Washington's stance as noted in the first reference and the African American migration from the rural South to the urban North after the Civil War as mentioned in the second reference.
The references suggest that African Americans considered moving from the rural South to the urban North following the Civil War to escape the oppressive conditions of the South and to seek better opportunities in the more industrialized and ostensibly less discriminatory North. This movement is known as the Great Migration.