I Know Why the Caged Bird Sings

I Know Why the Caged Bird Sings is a 1969 autobiography describing the early years of American writer and poet Maya Angelou. The first in a seven-volume series, it is a coming-of-age story that illustrates how strength of character and a love of literature can help overcome racism and trauma. The book begins when three-year-old Maya and her older brother are sent to Stamps, Arkansas, to live with their grandmother and ends when Maya becomes a mother at the age of 16. In the course of Caged Bird, Maya transforms from a victim of racism with an inferiority complex into a self-possessed, dignified young woman capable of responding to prejudice.

Question: is i know why the caged bird sings a true story
Answer: yes