Groups that were viewed as a culturally distinct multi band population that imagined itself as one people descended from a common ancestor, and are currently described as an indigenous group with its own set of loyalties and informal leadership living to some extent outside the control of a centralized authoritative state are known as:.

Tribe

Explanation:

Tribe is a type  of human social group used in anthropology. The definition of tribe is as mentioned in the question.

Tribes are a political group molded from an organisation of families (which are clans and lineages) who posses social and ideological solidarity. Membership of a tribe is based on factors like kinship ("clan"), ethnicity ("race"), language, living place, political group, religious thoughts,  tradition and cultural practices.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.