Compare nanny vision of the white man to her vision of the role of the black woman. Define and explain the difference and the reasons for those differences?

Nanny references the hierarchy of colour and gender. The black woman is at the bottom, she is the "mule",

"So de white man throw down de load and tell de nigger man tuh pick it up. He pick it up because he have to, but he don’t tote it. He hand it to his womenfolks. De nigger woman is de mule ud de world so fur as Ah can see." (Chapter 2)