There are numerous mountains in Japan and they were an obstacle towards unifying the country. Since many parts of Japan waged wars against others, it was difficult to fight in other people's regions since they had the mountains to their advantage so there was a difficulty in uniting every part of Japan through wars, like it was done in numerous other countries.
We all know that looks matter. What most of us don’t understand is just how much looks matter—and how difficult it is for us to ignore a person’s appearance when making a social judgment.