Answer and Explanation:
1. Scout talked to Mr Cunningham primarily because she is embarrassed and nervous. When she sees Atticus confronting the mob in front of the jailhouse, she does not know what was actually wrong, but she instinctively wants to go to her father and by doing so, she finds herself in front of a crowd of unfamiliar faces and she is the center of attention because everyone was watching her.
It is a relief when she finds Mr. Cunningham in the crowd and Her talk with him is simply polite conversation, meant to cover her awkwardness, but his acknowledgement of her means that he can no longer fade into the crowd, and must take responsibility for being present.
2. The passage opens with Scout revealing that she is aware of the tangled state of Mr. Cunningham’s affairs as the only lawyer in town, Atticus would be the person Mr. Cunningham would have sought advice from.He is therefore in debt to Atticus for his services which is a debt that could have only partially been met through the gesture of giving Scout’s family hickory nuts, which signals his impoverished state. Scout also went ahead to as well reveals that Cunningham’s son Walter has shared the midday meal with her family in the past, revealing that the kindness Atticus has shown to the father through his encouraging advice and has also been extended to his son. Ultimately the cumulative weight of recollecting these small acts of kindness by Atticus and Scout moves Mr. Cunningham to relent and disperse the crowd of vigilantes with him.
3.They put the law aside and threaten with "pack" violence
