the.com/territory

means An area of land, influence, or activity that someone claims, controls, or is responsible for.

from From Latin 'territorium,' land around a town, built from 'terra' (earth, land). Some Roman writers linked it instead to 'terrere' (to frighten) — the land you warn others off — but that's likely folk etymology; most scholars trace it simply to 'terra' plus a place-forming suffix. It entered English in the late Middle Ages via French, first meaning a region under a particular jurisdiction, later stretching to cover an animal's turf or a person's domain of expertise.