The Haudenosaunee, or Iroquois, formed a League of Five Nations long before Europeans arrived in North America. The Iroquois Confederacy had a constitution with rules for the selection of war chiefs, guidelines for the council meetings, and even suggestions for proper oratory at funerals.
Benjamin Franklin expressed great respect for the Iroquois Confederacy. During the American Revolution some tribes sided with the British, while others sided with the colonists, effectively dismantling the once-powerful Confederacy.
Equipped with artillery and siege weaponry, the in-game Iroquois civilization can mount a powerful but slow-moving assault.