Some of these accept the full names of countries, but others require that we leave out the letters you've provided in the hints. Please make all of them accept the full common names of the country as an answer.
Seems a bit odd that it doesn't accept 'Saint Vincent AND THE Grenadines' or 'Trinidad AND Tobago' but it does accept 'Sao Tome AND Principe'. Should be accepted with the 'and'/'and the' included when typed as part of the answer.
Its official name has never been that - in fact that's the very last thing the Macedonians would use to describe themselves! With their renaming to North Macedonia, their official name is now one letter too short to appear in this quiz.