Hi. Although you have not presented the text these questions refer to, from the context of the questions we can see that you are referring to chapter 7 of "Narrative of the life of Frederick Douglass." So I hope the answers below can help you.
1. They treat Douglass kindly, as Douglasss was helping them finish the activities they were doing. They like Douglass and like his presence, so much so that they encourage him to flee to the north of the country, where slavery is prohibited.
2. The most important part of this part of the book is when Douglass hears the word "abolitionism" spoken by the Irish. This part is important because it shows how Douglass first came into contact with a concept that would be so important and so relevant in his life.
We must remember that "Narrative of the life of Frederick Douglass" is the book where Frederick Douglass tells the story of his life as a slave and how he managed to become a free man through the education of self-knowledge.
