For 10 points, name these "People of the Longhouse" in modern upstate New York, who had a namesake "Confederacy."
According to one myth, a founder of this polity used a vessel made of white stone and planted the Tree of Peace. The Peace of Montreal ended one conflict involving this polity, the Beaver War, which also saw its defeat of the Huron. In the Treaty of Fort Stanwix, this polity changed the limit of white settlement and sold the British land between the Ohio and Tennessee Rivers. The Tuscarora nation would later join a polity of this name to become the "Sixth Nation." For 10 points, name these "People of the Longhouse" in modern upstate New York, who had a namesake "Confederacy."
According to one myth, a founder of this polity used a vessel made of white stone and planted the Tree of Peace.
{Iroquois} Confederacy