President Donald Trump is renaming the Gulf of Mexico the Gulf of America. But how will that change go into effect – and will everyone call it that?

A geographer explains who decides what goes on the map.

Mexican President Claudia Sheinbaum has an answer for President Donald Trump about his idea of renaming the Gulf of Mexico to the “Gulf of America:” he can call it whatever he wants on the American part of it.

For some crazy reason it’s having a renaissance in all my conversations. I can’t stop trotting it out while on the phone or out in public. "Chilly along the Gulf of Mexico," I’ll chip in as I pass someone in a store.

However, Trump's order only applies to the U.S. government's official position. Though headquartered in the U.S., corporations such as Google and Apple aren't beholden to the president's directive to rename the landmarks, raising questions as to whether they'll update their popular map services to reflect the government's stance.

Among the first executive orders signed by President Donald Trump was an order to rename the Gulf of Mexico to the newly named "Gulf of America." "President Trump is bringing common sense to government and renewing the pillars of American civilization," the newly inaugurated president's executive order said.

Trump also renamed Denali, North America’s tallest peak, as Mount McKinley, despite objections from Alaska’s senators.

Mapmakers and teachers are re-thinking what to call the gulf of water between Mexico, the United States and Cuba.

As part of a torrent of decisions he issued hours after taking office, President Donald Trump declared that the name of America’s tallest mountain be changed from Denali to Mount McKinley, and that the Gulf of Mexico be renamed “The Gulf of America.”

Mexican president says President Trump can call the gulf whatever he wants but that the world will still call it the Gulf of Mexico.

Trump said during his inaugural address Monday that he would order the renaming of the Gulf of Mexico and Alaska’s Mount Denali in his first executive orders President Donald Trump has been ...