Recently, a map dating back to 1980 has been making its rounds on social media and beyond that outlines the many physiographic regions contained in the contiguous United States.

Read More: Fascinating Map from 1980 Shows Three Distinct Colorado Regions |

The map shows that Colorado is divided into three distinct subdivisions including the Rocky Mountains, the Colorado Plateaus, and the Great Plains.

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While these distinctions are based on geographical features, there are designated regions based on culture as well and like the physiographic subdivisions, Colorado includes three of them.

What Are Colorado's Three Cultural Regions?

First, it should be noted that the United States is split up into various "nations," with Colorado existing in the Frontier.

Similar to the physiographic regions, Colorado is largely made up of what's known as the Rocky Mountains, though the cultural region takes up a much bigger area, encompassing nearly all of the state.

East of the continental divide we find Colorado's eastern plains, an area that is part of the cultural region known as the Southern Great Plains. This cultural region begins in Kansas in the north and stretches all the way to south Texas.

Finally, nearly the entire southern border of the state is part of the Southwest cultural region, a region that encompasses all of New Mexico and Arizona, as well as the southern tip of Nevada where Las Vegas is found and parts of Texas, Oklahoma, Utah and California.

Check out the entire map of the United States' cultural regions here.

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