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Forgetting to heed the requirement that minority groups must be perfect in all things , members of the convention movement permitted themselves the luxury , granted only to Caucasians , of jealousies and pettiness . Differences among American Indian / Alaskan Native groups must be acknowledged and respected in developing the methodology and conducting the research . Political scientists use two criteria : the warring groups must be from the same country and fighting for control of the political center , control over a separatist state or to force a major change in policy . It focuses on the ways in which the author helped countryside rangers to make their facilities more accessible to people with disabilities , and argues that if inclusive politics and practices are to work in reality new , more accessible , ways to explain social model theory to mainstream groups must be found . If a node group is a partition-bound node group , when it is flattened all of its member nodes and member node groups must be defined in the same system partition ; if they are not , they will not be used to produce the flat version of this node group .