micronation

noun3

1. •
   A non-autonomous entity that claims to be a sovereign state and mimics the actions of a state (with varying degrees of seriousness), but lacks any legal recognition and exists only on paper or in the mind of its creator; a micronational entity.

   • For every dreamer there is somewhere a doer, and in the realm [of] the strange micro-nations, the Republic of Minerva has plunged a bit ahead of the nebulous status of most others. — 1973
2. •
   Synonym of microstate (“a country that has a very small population and land area”).

   • Europe already has workable arrangements with micro-nations like Luxembourg, Liechtenstein, Andorra and San Marino. — 1991
3. •
   A small nation (“historically constituted, stable community of people, formed based on a common language, territory, economic life, ethnicity and manifested in a common culture”).

   • Careful groundwork had given Germany a highly unified micronation within the boundaries of Argentina, in many ways better prepared and better organized than the Argentine nation itself. — 1943