Final answer:
The Haudenosaunee Confederacy, also known as the Iroquois Confederacy, is comprised of the Mohawk, Oneida, Onondaga, Cayuga, Seneca, and Tuscarora nations. Their sophisticated governance system had a notable influence on the United States' developing concepts of democracy.
Step-by-step explanation:
The six nations that are part of the Haudenosaunee Confederacy are the Mohawk, Oneida, Onondaga, Cayuga, Seneca, and Tuscarora. These nations formed a political and military alliance from their homelands in what is now the northeastern United States. The confederacy was governed by a council of sachems, which reflected a sophisticated system of governance that included principles like checks and balances and separation of powers.
The confederacy, widely known for its early democratic principles, was crucial as it played a significant role in political interactions and alliances during various conflicts, including the American Revolution. This governance system notably influenced the democratic ideas of the developing United States. It's remarkable that some of the concepts observed in the Iroquois Confederacy have similarities to those embedded within the U.S. Constitution.