In geography, there are three types of regions, <span>formal, functional and vernacular.</span>
I'll tell you the simple stuff, I hope this helps you. For Japan the leader was to be called an emperor or empress who could only be a part of the royal family if they were related to the Shinto sun goddess. As for Europe, the leader was to be called a king or a queen. Like Japan, not just anybody could become royalty. Kings and queens came from a long descent of an Imperial family........
The map supports answer C.
