Gulf Of Mexico Name Change 2025 Update. The name “mexico” originates from an indigenous city that bore the same name as the modern state of mexico. The u.s., mexico and cuba share the body of water and each one controls a certain amount of the coastal waters of the gulf.
Has used the name rio grande to designate the river between texas and the mexican states of chihuahua, coahuila, nuevo leon, and. The gulf of mexico has carried this name for roughly 400 years.