South Korea: population of 51.7 million, annual population growth rate -0.2%. Vanishing from the world map isn't quite imminent.
They could simply let in 100,000 immigrants to fix the growth rate. I know it's not as simple as that in a society like Korea's, but 100k is perfectly manageable for such a large country. Take primarily young people with some useful level of education. They'll work, learn the language, marry, and start new families that become primarily Korean.
They could simply let in 100,000 immigrants to fix the growth rate. I know it's not as simple as that in a society like Korea's, but 100k is perfectly manageable for such a large country. Take primarily young people with some useful level of education. They'll work, learn the language, marry, and start new families that become primarily Korean.