This isn't hard to answer - A; because Japan had so many small, isolated islands, governing the entire country was often very challengin. Imagine being the emperor or just in charge of a country which was composed of hundreds of islands. For your decree to get into motion on all of them, it needed a lot of time.
<span>A map projection that shows accurate shape but a distorted size is called a mercator map. hope this helps</span>
It showed how strong North Vietnam was and it's potential of how threatening they were.
