Why Did Sethe's Mom Kill All Her Children Except Sethe?

A 1987 novel by the American writer Toni Morrison. Set after the American Civil War (1861–65), it is inspired by the story of an African-American slave, Margaret Garner, who escaped slavery in Kentucky late January 1856 by fleeing to Ohio, a free state.  The book is the story of Sethe and her daughter Denver after their escape from slavery.