The laws keeping "civilians" from owning effective personal weapons go back to a minimum of 1588: https://en.wikipedia.org/wiki/Sword_hunt https://en.wikipedia.

The laws keeping "civilians" from owning effective personal weapons go back to a minimum of 1588: https://en.wikipedia.org/wiki/Sword_hunt https://en.wikipedia.org/wiki/Sword_hunt I don't think there's any removing of Japanese crime and crime control from the following 2.5 century Tokugawa military dictatorship, which had profound effects in creating modern Japanese society.