Final answer:
The six Haudenosaunee Iroquois nations are the Mohawk, Seneca, Onondaga, Oneida, Cayuga, and Tuscarora.
Step-by-step explanation:
The Iroquois Confederacy, also known as the Haudenosaunee, consisted of six nations: the Mohawk, Seneca, Onondaga, Oneida, Cayuga, and Tuscarora. These tribes formed a powerful political confederacy in the mid-16th century and adopted a constitution that influenced future American governance. Each nation had its own autonomy, but they worked together through a council system to make decisions.