The story
By analogy with the United Nations. First attested on 20 November 1996 (see quotations), with the earliest-known incarnation founded in March 1997.
Etymology from Wiktionary, CC BY-SA 4.0.
United Micronations
Today it means: A common title used by an individual intermicronational organisation; or, more strictly, an intermicronational organisation founded in emulation of the United Nations. Full definition →