Isolation how does it relate to the characthers in the book roll of thunder hear my cry.?

and the book. ive read the book but i kinda don't get it so yeah.i have to write an essay.please helpIsolation how does it relate to the characthers in the book roll of thunder hear my cry.?
Well, the first thought off the top of my head is that the characters in the book are African American, and the book was about a period of time when African Americans were not exactly standing on anything approaching an equal ground with other citizens of the country in which they were born and raised. So there might be some basis for a theory of isolation somewhere in there.