Read the excerpt from The Land.

I loved my daddy. I loved my brothers too. But in the end it was Mitchell Thomas and I who were most like brothers, with a bond that couldn't be broken. The two of us came into Mississippi together by way of East Texas, and that was when we were still boys, long after we had come to our understanding of each other. Seeing that we were a long way from our Georgia home and both of us being strangers here in Mississippi, the two of us depended on each other and became as family.

What is the purpose of this narration?

to explain how a character is completing a task
to provide backstory about an important relationship
to give a detailed description of a significant event
to reveal a character’s true emotions about an event

Explanation:

The main idea of the narration is to describe how, under what circumstances, the narrator and  Mitchell Thomas became such affectively bonded.

Although it is presented the event of "The two of us came into Mississippi together by way of East Texas", there is not really a detailed description of that, indeed, significant event.

The event is just mentioned, as important, because it is the start, the triggering event, of the important relationship developed by the narrator and Mitchell Tomas.

Thus, the purpose of the narration is to provide the background or the events that preceded and led to that important relationship, i.e. the backstory.

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b. cronkite, a trusted television personality, declared that the war was unwinnable and told the american people that the government had better find a way out

even though it went against everything the news anchors typically stood for, cronkite voiced an opinion and took a stance, telling the us that there was no way they were going to win, the war was going to end in a stalemate.