> I think people would agree with (b) because when you're talking about populations people implicitly assume we're talking about a country.
Yeah, that makes sense, but the confusing part for me is that, at least if my understanding is correct, the South Korean government doesn’t legally recognize the partition of Korea. So they think all those 80 million people are rightfully citizens of their country (that is, the Republic of Korea), even though 30 million are temporarily subject to an illegitimate regime. But I’m not sure if people actually think like this in practice.
Well, yeah, constitutionally speaking, Republic of Korea is the only rightful government with sovereignty over the whole Korean peninsula (and if you go across the border, you will here the same in reverse, except they recently decided to change their stance to "there are two countries and we're not related at all!").
But everyone understands that this is a legal fiction. Despite mutual hostility, the two Koreas are somewhat relaxed about interpretation: for example SK doesn't object to other nations establishing diplomatic relations with NK, and vice versa.
Depending on who you ask, you'll hear different views on how to reconcile the law with reality, ranging from "there is only one rightful government, and a group of commie rebels we should destroy" to "we should accept that there are two different nations" to "South Korea is but a colony of American Imperialists!" But anyway, everyone accepts that practically there are two countries, so when we're talking about any contemporary matters, we're usually just talking about South Korea. (Unless we're specifically interested in North Korea.)
> I think people would agree with (b) because when you're talking about populations people implicitly assume we're talking about a country.
Yeah, that makes sense, but the confusing part for me is that, at least if my understanding is correct, the South Korean government doesn’t legally recognize the partition of Korea. So they think all those 80 million people are rightfully citizens of their country (that is, the Republic of Korea), even though 30 million are temporarily subject to an illegitimate regime. But I’m not sure if people actually think like this in practice.