Answer:
A functional region is defined by a node or focal point, with the surrounding areas linked to that node by transportation systems, communication systems, or other economic associations involving such activities like manufacturing and retail trading
Step-by-step explanation:
Functional regions are defined according to the movement of people, goods and decisions and ideas on the earth's surface. Region of a given location as a commercial, industrial, or agricultural area.
It is a geographical concept developed by the French school in the nineteenth century, and incorporated by governments as a criterion of political-administrative division and planning instrument (regional policies).