History
History
History
UK
US
Meaning:
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(an act of) forming a political union of several states for control of foreign affairs, defence etc by the central (Federal) government but keeping regional (State) government for other things such as education

partnership, organization

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Cases of word usage

1) of, based on, federation (federal)

2) (to cause states, organizations, societies) to unite into a federation (federate)

FEDERATION as in Wiktionary
FEDERATION as in Wikipedia