noun
micronation
A self-declared entity that claims to be an independent nation but is not recognized by established governments. Often created as a hobby, political statement, or artistic project.
彼は自分の家をミクロネーションとして宣言した。
He declared his own house as a micronation.
ミクロネーションの代表が国際会議に参加することはほとんどない。
Representatives of micronations rarely participate in international conferences.