a political unit formed from previously independent people or organizations

form a group or unite

a federation of tribes (especially Native American tribes)

a North American Indian confederacy organized by the Muskogee that dominated the southeastern part of the United States before being removed to Oklahoma

a commercial and defensive confederation of free cities in northern Germany and surrounding areas; formed in 1241 and most influential in the 14th century when it included over 100 towns and functioned as an independent political power; the last official assembly was held in 1669

a collective name applied to the Anglo-Saxon kingdoms of south, east, and central England during late antiquity and the early Middle Ages, conventionally identified as seven: Northumbria, Mercia, East Anglia, Essex, Kent, Sussex, and Wessex.