The Iroquois League, or Haudenosaunee Confederacy, united five nations — Mohawk, Oneida, Onondaga, Cayuga, and Seneca — under the Great Law of Peace prior to European contact. Founded by Dekanawida (the Great Peacemaker) and Hiawatha, the confederacy established a council of 50 sachems to govern intertribal affairs through consensus. The Tuscarora joined as a sixth nation around 1722. Its governance structure influenced later democratic frameworks, including debates at the 1787 Constitutional Convention.