What is the author's theory about people's belief in divine intervention? Chapters 18-21

Momma believes that God controls our lives and concedes that our experienced and life lessons are allowed by God..... He has a reason for everything.

Angelous says, “People whose history and future were threatened each day by extinction considered that it was only by divine intervention that they were able to live at all. I find it interesting that the meanest life, the poorest existence, is attributed to God’s will, but as human beings become more affluent, as their living standard and style begin to ascend the material scale, God descends the scale of responsibility at a commensurate speed.”