Why did Anna sewell write black beauty?

Anna Sewell wrote "Black Beauty" to raise awareness about the mistreatment of horses and advocate for their humane treatment. Through the narrative of a horse's life, she aimed to highlight the importance of kindness and compassion towards animals. The book serves as both a critique of the cruelty in the society of her time and a call for reform in the treatment of horses. Sewell's personal experiences with horse abuse inspired her to create this influential work, which has since become a classic in animal literature.