confederation
A voluntary association of independent states is a confederacy.
commonwealth
A Voluntary association of independent retailers in a given line of business for collective in buying, ad.
independent states.
Confederation referred to the group of colonies (which became states) banding together in order to more strongly represent their shared interests, especially with regard to dealing with the British.
Voluntary Protection Programs Participants' Association's population is 15.
Union
A loose association of independent states that agree to cooperate on specified matters.
AARP
The Commonwealth of Independent States is an association of sovereign nations and has no capitol of its own. Its largest city is Moscow, Russia, and its administrative headquarters are in Minsk, Belarus
Independent Basketball Association was created in 2011.
Independent Unionist Association was created in 1937.