What was the purpose of the Iroquois Confederacy?

Answer:
D
Explanation:
By their desire to stand together against invasion, the tribes united in a common council composed of clan and village chiefs; each tribe had one vote, and unanimity was required for decisions.
Explanation:
they aimed to create an empire by incorporating subservient, conquered people.
They initially consisted of five tribes who were in close proximity of the lroquois territory