n order to enroll into the tribe and receive an allotment, each person came before a Dawes Commission official who interviewed them, generally through an interpreter. If the person did not claim to be “full-blood,” the official questioned them about their parents and grandparents. The interviewer established the person’s “blood quantum”: three quarters, one half, three eighths, so on. The number was recorded on the individual’s enrollment card. Once enrolled you were enrolled as a member of the tribal nation, but also enrolled as a member of a racial group – “full blood,” “mixed-blood,” or “negro.”
I feel like this process was meant in order to alienate Indians from other Indians, thus creating a division between them and also tension due to some being "more" indian the other.