The Iroquois Confederacy (also known as the "League of Peace and Power", the "Five Nations"; the "Six Nations"; or the "People of the Longhouse") 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 (Akunęhsyę̀ni) in Tuscarora. At the time Europeans first arrived in North America, the Confederacy was based in what is now the northeastern United States and southern Canada, including New England, upstate New York, Pennsylvania, Ontario, and Quebec.