IPA: /ˌtɛrɪˈtɔːriəlɪzəm/
KK: /tɛrɪˈtɔriəlɪzəm/
A system or principle that gives power and influence to landowners or authorities based on territory, often related to governance or religion.
The concept of territorialism has shaped many political systems throughout history.
Territorialism is formed from "territorial" (from Latin "territorium", meaning land or territory) and "-ism" (a suffix used to denote a practice or philosophy). The word refers to a belief or practice related to the control or ownership of land or territory.
Think of 'territory' as the land you claim, and '-ism' as a belief or practice — so territorialism is about the belief in owning or controlling land.