B. Maybe you've already heard the news: Jamie and Alex are moving to Northern California!
Northern should not be capitalized.
A.
This Is because It is introducing the white family, Mr. White, and Mr. Whites friend.
It is
"The life of an immigrant is difficult.
Immigrants tend to live in one area."
I think.
Those are called "creation myths". They show us how everything, not only earth, was created, and what the gods had to endure in order to do so.