In chapter 4 in "tia lola came to visit / stay" what's the main idea?

This story seamlessly weaves two culturas while letting each remain intact, just as Miguel is learning to do with his own life. Like all good stories, this one incorporates a lesson just subtle enough that readers will forget they're being taught, but in the end will understand themselves, and others, a little better, regardless of la lengua nativa—

The led the formation to the united states