the fact it is on an island.
Japanese
buddism
Shinto
Sumo Wrestling
steel and other metals ,electrons, and telecommunication equipment.
Hokkaido, Honshu, Shikoku, and Kyushu
Manufacturing, construction, distribution, real estate, services, and communication are japans main industry
the main feature of a rodent is the teeth
They believe in many Gods
Type 95 Ha-Go .
The Japanese were completely bewildered by antisemitism. At that time it was very much a feature of European and related cultures.