It also affects the way in which one family relates to another, to the neighborhood, and to the community.

What correction should be made to this sentence?

The series is fine; it's parallel.

The only thing I can see is that "It" seems to refer to nothing, but then I don't know what the preceding sentence says.

It also affects the way in which one family relates to another, to the neighborhood, and to the community

What correction should be made to this sentence?

The sentence appears to be grammatically correct. No correction is needed.