Answer:
The parts of the above excerpts which show that slaves had no legal rights and were often betrayed by their masters are:
The Narrative of the Life of Frederick Douglass, an American Slave by Frederick Douglass (excerpt)
"She had served my old master faithfully from youth to old age. She was nevertheless a slave—a slave for life—a slave in the hands of strangers; and in their hands, she saw her children, her grandchildren, and her great-grandchildren, divided like so many sheep, without being gratified with the small privilege of a single word as to their or her own destiny."
Incidents in the Life of a Slave Girl by Harriet Ann Jacobs (excerpt)
"no promise or writing given to a slave is legally binding; for, according to Southern laws, a slave, being property, can hold no property."
"While my grandmother was thus helping to support me from her hard earnings, the three hundred dollars she had lent her mistress were never repaid."
Fredrick Douglass wrote his own account of life in which he mentioned about the ills of slavery and about the hardships which the slaves had to undergo. He had tried to expose the cruelty of slavery which doesn't spare anyone born in a black family. He points out the idea that a slave is a form of property owned by the master and he possesses full control over him.
Harriet Jacobs wrote in her book the struggles which a slave women undergo to attain freedom. She talks about the sexual harassment and abuse they endured during their lifetime.Step-by-step explanation: