Svalbard is included with Lappland just because of geographic proximity, though i may revise it; it could either go with Scandinavia or eventually be colored white to designate it as a nature preserve rather than a place open for human settlement
in older versions, Han China was divided into two or three other provinces, but this time i decided to leave it together because it is the home region of the majority of ethnic Han Chinese. you also have to remember that this map is supposed to be set in the 32nd century AD, hundreds of years after humans expand into outer space and encounter intelligent alien life and even more hundreds of years since they unified into a single country. by this point, the population of China (and other places on Earth with huge population densities) would have reduced to a degree due to diaspora into other regions which accompanies greater equality of wealth and more opportunities to travel to other parts of the world, which many people all over the world undoubtedly would want to do both then and today (with limitations today largely being the result of not having the financial means to do so). in the same note, places with lower population densities would have more people living in them by this point