Im not quit sure but ik its
Harriet Tubman uses ethos to have the readers trust her and it helps make her an author you can trust. Ethos is when an author tries to convince the reader that they are a reliable source. So she uses ethos for her rhetorical appeal.
Hope that helps
In The Great Gatsby, Nick Carraway tells the story of a man who lives next door.
Wiesel is in his home in Poland in the excerpt.