#union.political_unit  a political unit formed from previously independent people or organizations; "the Soviet Union"
  supertype:  #political_unit__politicalunit  a unit with political responsibilities
  subtype:  #confederation.union__confederacy__federation  a union of political organizations
     subtype:  #tribe_federation__tribefederation__nation  a federation of tribes (especially native American tribes); "the Shawnee nation"
        subtype:  #federation_of_tribes__tribe  a federation (as of American Indians)
     subtype:  #Hanseatic_League  a commercial and defensive confederation of free cities in northern Germany and surrounding areas; formed in the 13th century and most powerful in the 14th century
     instance:  #Creek_Confederacy
  subtype:  #league.union  an association of states or organizations or individuals for common action
  subtype:  #customs_union__customsunion  an association of nations to promote free trade within the union and set common tariffs for for nations that are not members
     instance:  #Benelux

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