>>New Zealand and Cuba are two other countries which IMO are not part of any of the seven continents.
NZ is part of the Zealandia continent that is mostly under water. This was done to isolate NZ from the all the crazies out there, especially the nearby continent of Australia that is full of vile inhabitants, most of whom are venomous.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1