Iroquois Confederacy

league of six Native American tribes formed to arbitrate tribal feuds and rule on military affairs (included the Mohawk, Oneida, Onondaga, Cayuga, Seneca, and Tuscarora tribes)

The Iroquois Confederacy (also known as the "League of Peace and Power", the "Five Nations"; the "Six Nations"; or the "People of the Long house") is a group of First Nations/Native Americans that originally consisted of five nations: the Mohawk, the Oneida, the Onondaga, the Cayuga, and the Seneca. A sixth tribe, the Tuscarora, joined after the original five nations were formed. Although frequently referred to as the Iroquois, the Nations refer to themselves collectively as Haudenosaunee.
See more at Wikipedia.org...