Roll of Thunder, Hear My Cry
Whats the main idea
What's the main idea of the story
What's the main idea of the story
I think this is a thematic question. There are many themea you can consider. Beyond racism in the American south, I am inclined to think the importance of family is at the heart of the book. You can check out this and other themes at the link below:
http://www.gradesaver.com/roll-of-thunder-hear-my-cry/study-guide/themes