I read "The myth of Main Street" by David Opdyke in the April 8, 2017 issue of The New York Times. There is one paragraph:
Americans, regardless of education or geographical location, have marketable skills in the global economy: They speak English and understand the nuances of communicating with Americans — something that cannot be easily shipped overseas. The United States remains the largest consumer market in the world, and Americans can (and some already do) sell these services abroad.
Something that cannot be easily shipped overseas means the work can not be easily got by overseas persons as they don't master the language? Does *something" refer to nuances or the language skill?
What does these services refer to?
The author says US remains the largest consumer market in the world, I think author says this which must relate to the topic— small-town Americans can find jobs? but I don't know how they relate.