Answer:
The Author included the above flashback to recall Zeitoun's foreign birth and the universality of struggles against nature.
Step-by-step explanation:
In the part 2 of Zeitouns, it becomes clear that despite the effort of Zeitouns to adjust his lifestyle to that of Southern American culture, Americans do not accomodate them. the incidence of Todd offering Zeitons a beer bearing in mind the strict prohibition of alcohol in islam. and likewise the fact that Kathy's mother believed that Zeitouns forces kathy to wear hijab and tell her to be herself shows how culturally insensitive the Americans are to them.
Although their are many insensitivity of most of the characters, the part 2 is an exaltation of the common man.
The Author included the above flashback to recall zeitouns foreign birth and universality of struggles. Zeitons grew up in Jabel in syria. where His father was a sea captain, Zeitons and His brother also grew up to become sailors. The great storm evokes his memory of the island. The Author empasizes individual heroism in the aftermath of the storm.