noun (n)

• the state of being allied or confederated(noun.state)

  Synonym:
  alliance
  

  source: wordnet30
• a union of political organizations(noun.group)

  Synonym:
  confederacy, federation
  

  source: wordnet30
• the act of forming an alliance or confederation(noun.act)

  source: wordnet30
• The act of confederating; a league; a compact for mutual support; alliance, particularly of princes, nations, or states.(noun)

  source: webster1913