Respuesta :
These lines affect the poem in that: They use hyperbole to explain how hard Black farmers worked.
What is Hyperbole?
Hyperbole simply refers to the exaggeration of words and meanings. It is not possible for anyone to plant literal rows from Canada to Mexico.
The author's use of the words in these lines was an exaggeration that shows how hard the Black farmers had worked.
Learn more about hyperbole here:
https://brainly.com/question/2351925