Tech giant Google says it will update its popular maps service to reflect any official name changes pushed through by Donald Trump. It's part of an established policy, but it's not always popular.

Google says it will take its cue from the U.S. government if it has to change the names of the Gulf of Mexico and Denali on its Maps service.

How do place names get made and then changed? There’s a process. But it involves people as well as bureaucracy, so it’s not simple or quick, as President Trump is about to find out.