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confederation - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

From Middle English confederacion, confideracion and Middle French confédération, from Old French confederacion, from Latin cōnfoederātiō. Doublet of confederacy.

confederation (plural confederations)

  1. A union or alliance of states or political organizations.
    Synonyms: alliance, confederacy, federation, league
  2. The act of forming an alliance.

union or alliance