It's based on
Hopefully, the person who created this world map said:
"Just for the curious people, if anyone is wandering whats the deal with some areas or countries or villages in some places this is because this map is from 30 to 50 years after the 4 Great Ninja War so by that time some countries have disappeared, some have change either in area or name and some new ones have come to appeared; specially some new super powers like the land flames and the land of snow which have risen in power this last few years.
an example of a changed name country is the old land of bears that has changed their name to land of stars in honor of their ninja village which has gained reputation over the years.
Feel free to make any changes or modifications according to your story and/or timeline of events.
And this map is a cease and desist map, if the corporation from Naruto requested to take this down, it will be taken down, no further questions.
I've only done the southern part so you may not see be familiar with the map yet.