During the French and Indian War ( the North American part of the Seven Years ' War ) , the Iroquois took the side of the British against the French and their Algonquian allies , both of whom had been enemies of the Iroquois in the past . During the French and Indian War ( North American part of the Seven Years ' War ) , the Iroquois sided with the British against the French and their Algonquian allies , both traditional enemies of the Iroquois .