When I was in high school, some 30 years ago, I studied abroad for two years in a small Italian village where no one spoke English. Even when I went to a city, such as Venice, I rarely found people who spoke my native language. That has changed completely. You can do business in English almost anywhere in the developed world, with the possible exception of Japan.

A version of this article appeared in the April 2016 issue (pp.37–40) of Harvard Business Review.