what two reasons why was Japan often isolated from the other countries?

Question

what are two reasons japan isolated the other countries

Answer 1

isolated Pacific Islands

seemingly Asian, but offshore too much

ethnicity different from Russians. Language different. Politics different from Russia, China and nearby Asia. religion different, pantheistic Shitoism, with a deity Emperor descended from the the Sun Goddess Herself.

geography, linguistics, religion, ethnicity, politics with a militaristic spirit.

Spare down to two? Maybe Geography & religion

or physical & human geography