What are four major events in black beauty?

In "Black Beauty," four major events include the young horse's idyllic life on Farmer Grey's estate, where he experiences kindness and care. This is followed by his sale to a cruel cab driver, leading to harsh treatment and hardship. After enduring more mistreatment under various owners, Black Beauty eventually finds a kind and compassionate owner, allowing him to live out his days in peace. The story highlights the importance of humane treatment and empathy towards animals throughout these events.