Countries by Last Two Letters

I think you mean what approach the quiz setter takes (rather than 'you' the quizzee). And the approach here is nearly always Sovereign nations, as appears on the Countries of the World quiz. And when I say "nearly always" I mean that if constituent countries (like England Scotland Wales and Northern Ireland) then the context of the quiz will make that clear. Otherwise, Countries=Sovereign Nations.

Where I live "country" implies it is independent. There is so such thing where I live as a non independent country

Aruba is a completely autonomous country. Would you claim australia or canada is not a country (Officially reigned by the queen of england)? They handle their own affairs have their own goverment. Aruba has its own constitution and is not a part of the EU.

The independence of all three are around the same time 1982, 1986 and 1986 (though steps towards it started early)

(Don't get confused saba and bonaire arent countries and are part of the country the netherlands not just the kingdom of the netherlands)

Aruba doesnt appear on this website simply because the kingdom of the netherlands as a whole is counted as a country (which isnt the most logical decision but if it is your starting point it will get confusing if you also list the countries seperately). But it is as much a country as is canada and australia. (decisions made to simplify things on this website does not alter the reality and laws and decisions and agreements that are made in real life)

For instance, The netherlands was the first country to make gaymarriage legal, back in 2001. In curacao this law is not in place. You cant marry someone of the same sex in Curacao

(but it is in boanire, saba and st eustachius, since théy áre a part of the country the netherlands)

@Sifhraven Aruba is not completely autonomous, certainly not like Canada and Australia are autonomous. Its foreign affairs and defense are handled by the Netherlands. More importantly, the 'Council of Ministers of the Kingdom' exerts supervision over the island's financial policy (although there is some debate on this topic between the Netherlands and Aruba at the moment). That council consists mostly of ministers from the country of the Netherlands. So Aruba (and Curacao, and Sint Maarten) aren't as independent (yet) as countries like Canada.

@Sifhraven It is inaccurate to liken the country status of Aruba to that of Australia and Canada. Defence and foreign affairs are still managed by the Netherlands (as with the British Overseas Territories), while those are managed by Australia and Canada themselves.

Aruba is as much of a country as California. The fact that the word "country" or "state" is sometimes used to name the subdivisions of a sovereign state/country doesn't make those subdivisions sovereign states/countries in their own right. Although they may be autonomous, which isn't the same thing as independent.

In their native languages* ;)

+1

That must have been pre 1978, because that was when the spelling "Suriname" was made official.