"Territorial" refers to the behavior or attitude of individuals or groups that seek to control or defend a specific area or space. This can be observed in various contexts, such as animals marking their territory to secure resources or humans establishing boundaries in social or political situations. In psychology, territoriality can manifest in personal spaces, where people feel a sense of ownership over their environment. This concept is also relevant in fields like geography and sociology, where it helps explain how communities interact with their surroundings and each other.