c) Iroquois Confederacy

The Iroquois Confederacy, also known as the Haudenosaunee, was a powerful alliance of six Native American nations predominantly located in what is now New York State. Established long before European contact, the Confederacy played a crucial role in the political, cultural, and economic landscape of northeastern North America. Their sophisticated system of governance and social organization greatly influenced American and European thinkers, contributing to the development of democratic ideals.