. "The Territorial Imperative: A Personal Inquiry Into the Animal Origins of Property and Nations, usually referred to as The Territorial Imperative, is a 1966 nonfiction work by Robert Ardrey. It describes the evolutionarily determined instinct among humans toward territoriality and the implications of this territoriality in human meta-phenomena such as property ownership and nation building ."@en . . "400"^^ . "The Territorial Imperative: A Personal Inquiry Into the Animal Origins of Property and Nations"@en . . "1568361440" . .