Why does Annie Johnson have to find a source of incom (by Maya angelon)?

Annie Johnson is a character in Maya Angelou's memoir, "I Know Why the Caged Bird Sings." In the book, Annie Johnson is a single mother who has to work various jobs to provide for her son, Bailey. Annie Johnson has to find a source of income because she is solely responsible for the financial support of her family. She works as a domestic worker, cleans houses, and even turns to prostitution briefly to make ends meet. Her determination to provide for her son despite the challenges she faces is a central theme in Angelou's memoir.