Read this sentence from paragraph 2 of the selection “A Desperate Trek Across America”. “I refrain here from telling
this at greater length because each one can imagine for himself what could
happen in a land so strange."

Why does the author use a primary source in his
description of the expedition? *

remind the readers that the incidences that happened to Cabeza de Vaca and his companions had completely transformed them.

Explanation:

In the second paragraph of  “A Desperate Trek Across America”, the author use this primary source in his  description of the expedition to remind the readers that the incidences that happened to Cabeza de Vaca and his companions had completely transformed them.This line was told by Cabeza de Vaca himself to explain the harrowing experiences which he had encountered while in America. The experience had completely changed him into a different person in ways he couldn't even imagine.