Due to being an island country surrounded by the sea, and isolated, contact with other races was restricted to some extent, and in addition to the above characteristics, the way for generating a unique and rich culture was paved.
また、周囲を海に囲まれ個立した島国であることで、他民族との接触に一定の制御が加えられ、前記の特質に加えてさらに、独特の豊穣な文化を醸し出す下地ともなってきた。