Answer:
The answer is "Prime Meridian".
Explanation:
The process, that describes an imaginary line in part these features is known as Prime Meridian. It is also known as 0° Longitude in which Longitude is a statistical vector that determines the location to East to West and points on the surface of the Earth or of a paradisaical body surface, and 0° Longitude is the line that describes the Equator and divides the world into two equal quadrants.