What is Territory ?
Territory is (noun) 1. a large stretch of land They occupied all the territory on the east bank of the river. 2. land which belongs to a country A group of soldiers had wandered into enemy territory. 3. an area visited by a salesperson His territory covers all the north of the country. 4. an area which an animal or bird thinks belongs only to it Animals often fight to defend their territories. (NOTE: The plural is territories.)
source: Easier English, Student Dictionary Upper Intermediate Level