About 1390, today's State of New York became the stronghold of five powerful Indian tribes. They were later joined by another great tribe, the Tuscaroras from the south. Eventually the Iroquois, Mohawks, Oneidas, Onondagas, and Cayugas joined together to form the great Iroquois Nation. In 1715, the Tuscaroras were accepted into the Iroquois Nation. The Conferacy was made up of six groups: Cayuga, Mohawk, Oneida, Onondaga, Seneca, and Tuscarora. They called themselves Iroquois. They were big rivals with the Algonquians. White men called this group the League of Six Nations.