General usage:
* The lion fiercely defended its territory from intruders.
* The explorers claimed the new land as territory for their country.
* The company expanded its territory by opening new stores in neighboring cities.
* The team was struggling to hold onto their territory in the final minutes of the game.
Figurative usage:
* She felt a strong sense of ownership over her emotional territory.
* The artist's work explores the complex territory of love and loss.
* He's venturing into dangerous territory by criticizing the government.
Specific context:
* The territory of France includes the mainland and several overseas departments.
* The United States acquired the Louisiana territory in 1803.
* The territory of the ancient Roman Empire stretched across much of Europe.
You can also use "territory" as an adjective:
* The territorial waters of a country extend 12 nautical miles from its coastline.
* The dog was being territorial and growling at the other dogs.
The best way to use "territory" depends on the specific context and the meaning you want to convey.