History.com
https://www.history.com/topics/japan/samurai-and-bushido
World History Encyclopedia
https://www.worldhistory.org/article/1438/feudalism-in-medieval-japan/
ushistory.org
https://www.ushistory.org/civ/10c.asp
Britannica
https://www.britannica.com/place/Japan/Samurai-groups-and-farming-villages
