If the island of Japan is submerged by seawater, which country will it immigrate to?

Inadvertently see your question, very interested in answering! If Japan is submerged, neighboring countries have no room for accommodation. Among the neighboring countries, Russia is the most suitable. With a vast territory and sparse population, it is very suitable for Japanese immigrants. Personally, I think there are two possibilities: 1 Japan suffered a natural disaster and was flooded in a short time. In that case, Australia and Canada are good places and will never go to Russia. This involves the global policy of the United States. Australia and Canada are vast and sparsely populated, and the quality of Japanese people is quite high. It will definitely bring unprecedented technological development to the local area, so this is what the United States hopes to see. Second, Japan is slowly being submerged. This situation may be that Japan has been continuously attacked by natural disasters, and it has been unable to resist and must immigrate as a whole. In this case, we can purchase territory in Russia under the mediation of the United Nations and then rebuild the country. In this case, Japan will immigrate to Russia. In either case, the whole world will encounter many disasters, and no country can be immune.