The state of nature is a concept used in moral and political philosophy, religion, social contract theories and international law to denote the hypothetical conditions of what the lives of people might have been like before societies came into existence. There must have been a time before organized societies existed, and this presumption raises question such as:”What was life like before civil society?”; “How did government first emerge from such a starting position?” and; “What are the hypothetical reasons for entering a state of society by establishing a nation-state?”. In some versions of social contract theory, there are no rights in the state of nature, only freedoms, and it is the contract that creates rights and obligations. In other versions, the opposite occurs: the contract imposes restrictions upon individuals that curtail their natural rights. Societies existing before or without a political state are currently studied in such fields as Palaeolithic history, and the anthropological subfields of archaeology, cultural anthropology, social anthropology, and ethnology, which investigate the social and power-related structures of indigenous and uncontacted peoples living in tribal communities.