There are several characteristics that define a region. Some of the common ones include landforms, language, culture and so on.
The gradual and orderly process of ecosystem development brought about by changes in community composition and the production of a climax characteristic of a particular geographic region bella eves
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the region which belongs to the industries .
a region
a region
The physical characteristic of a place
an attribute, quality, or characteristic of something.
region
a unifying characteristic
A characteristic feature or a distinguishing quality
A functional region can be defined as a region that has specific characteristics that diminishes outwards.
Again, please define "the middle region."