The author's viewpoint in <em>"The Iroquois Confederacy" </em>was simply to state that:
C. The Iroquois Confederacy instituted an effective democratic system.
Based on the complete text, we can see that there is a narration about the Iroquois Confederacy and how the rules stated there guided the tribes as the body of laws which guided them were called Gayanashagowa (Great Law of Peace).
With this in mind, we can see that the author's viewpoint was about how the Iroquois Confederacy was instituted as an effective democratic system.
Identity negotiation refers to the processes through which people reach agreements regarding "who is who" in their relationships. Once these agreements are reached, people are expected to remain faithful to the identities they have agreed to assume.