the Rocky Mountains in the western regions
The Rocky Mountains qualify as such.
Mexico and Canada are in North America, along with the US. Mexico is south of the US and Canada is north of the US.
Canada,south america, africa,Australia,antartica,erope,asia,Mexico
USA
The oldest Landform region in Canada is the Canadian shield, the oldest highland region is the Appalachian mountains
Canada considers the Rockies a natural region.
mexico
The largest region of mountains in the US is the Rocky Mountains, stretching over 3,000 miles from Canada down to New Mexico. The range is known for its rugged terrain, diverse ecosystems, and iconic peaks like the Rockies form a major part of the western spine of North America.
The Rocky Mountains, known as Sierra Madre Occidental in Mexico.
The Rocky Mountains are located in western North America, spanning the United States and Canada. They run from British Columbia and Alberta in Canada down through Idaho, Montana, Wyoming, Colorado, New Mexico, and into Arizona in the United States.
No nation or region "splits" the Rocky Mountains. The Rocky Mountains, however, may be described as splitting western Canada and the western US.
The Rocky Mountains, also known as Sierra Madre Occidental in Mexico.