Including this First Nations tribe located in Maine, how many are linked in a confederation?
Wabanaki Confederacy: The Wabanaki Confederacy ("Wabenaki, Wobanaki", translated roughly as "People of the First Light" or "People of the Dawnland") are a First Nations and Native American confederation of five principal nations: the Mi'kmaq, Maliseet, Passamaquoddy, Abenaki, and Penobscot. Penobscot:  They are organized as a federally recognized tribe in Maine and as a First Nations band government in the Atlantic provinces.
five principal nations