This marital practice is called : Endogamy
Endogamy is a marital process in which the grooms and brides only limited from within local community or tribe.
This marital method is deemed to be out-of-date and only carried out in the past to maintain the 'bloodline' of a specific tribe or clan.
<span>a deeply ingrained and maladaptive pattern of behavior of a specified kind, typically apparent by the time of adolescence, causing long-term difficulties in personal relationships or in functioning in society.</span>
Explanation:
Because forced assimilation had nearly destroyed Native American culture, some tribal leaders attempted to reassert their sovereignty and invent new spiritual traditions. The most significant of these was the Ghost Dance, pioneered by Wovoka, a shaman of the Northern Paiute tribe.
