The answer is b. Iroquois
The Haudenosaunee, the five-nation Iroquois League that had used its trading relationships with Dutch and English colonists to achieve military dominance during the mid-1600s, grew even more powerful as the century wore on.
The negotiations, from when both New England and Chesapeake were engulfed with violence, established a pattern of councils and treaties between New York in the Iroquois League known as the Covenant Chain. Four other colonies eventually joined the diplomatic councils, which governed British-Native American relations during the first half of the 18th century.