Pressure from Dutch-allied Mohicans and Hurons prompted Dekanawidah and Hiawatha to found it around 1600.
One leader of this group saw his anti-cannibalism campaigns ignored until he climbed a tree and ordered his detractors to cut it down, plunging him into a river. The pro-British faction of this group, whose original leaders included "the Great Peacemaker," was defeated by John Sullivan and signed the Second Treaty of Fort (*) Stanwix. They overran the Andaste as part of their quest to find new beaver populations; like all of their actions, that was approved by a unanimous vote of fifty sachems. Pressure from Dutch-allied Mohicans and Hurons prompted Dekanawidah and Hiawatha to found it around 1600. For 10 points, name this organization of the Onondaga, Oneida, Cayuga, Seneca, Mohawk, and Tuscarora peoples, a confederacy active in the upstate New York region.
One leader of this group saw his anti-cannibalism campaigns ignored until he climbed a tree and ordered his detractors to cut it down, plunging him into a river.
{Iriquois} Confederacy [or {League} of the {Iroquois}; or the {Five Nations}; or the {Six Nations}]