Aregion based on subjective attitudes about different area of the world is called a

A perceptual region is the one that is classified on the basis of subjective attitudes about different areas of the world.

Explanation:

The people who dwell together and posses a broadly similar attitude about the subjects of common concern are believed to be have same perception or attitudes. A region spanned by such populations living together are thus called perceptual regions or vernacular regions. The beliefs and way of thinking of these people shape their attitudes towards the outside world and hence, their behavior towards people other than from their community seems identical.