Why does uncle john give Gum to children-Grapes of wrath?

Uncle John gives gum to children as a small gesture of kindness, showing he cares about their well-being. In the novel "The Grapes of Wrath," this action serves as a moment of compassion and connection amid the hardships faced by the Joad family and other migrant workers. It reflects Uncle John's desire to bring moments of joy and comfort to others, especially to children who are often overlooked in times of hardship.