Why would the author of "Did Farmers of the Past Know More Than We Do?" agree with using the Three Sisters farming method from "A Short History of a
Special Plant"?

1. Allusion

2. it sets up a contrast

Explanation:

The allusion is a figure of speech that allows a writer to make a reference to something, someone, period, history, event and anything else. We can see an example of this in the stanza shown above, when the poem makes reference to Selma and Saigon.

This figure of speech was used to promote the contrast between the violence suffered in Selva and the serenity of the photo that the poet loves.