(historical) The Confederate States of America, the collection of American states that seceded from the United States in 1860-61, and fought against the Union in the American Civil War.

An alliance.

plural of confederacy

A confederacy of Iroquoian tribes. Initially consisting of the Five Nations (Mohawk, Onondaga, Oneida, Cayuga, Seneca), later of the Six Nations (adding the Tuscarora)

(anthropology, ethnology) A North American First Nations and Native American confederation of four principal Eastern Algonquian nations.