European feudalism was based instead on Roman Imperial laws and customs, supplemented with Germanic traditions, and supported by the authority of the Catholic Church.
Japanese feudalism was based on the ideas of the Chinese philosopher Kong Qiu or Confucius (551-479 BCE). Confucius stressed morality and filial piety, or respect for elders and other superiors.
Europe
Both had a feudal system
Actually , there is no definite place.But the feudal system originated in Japan and Europe.
During the Middle Ages, the two primary groups that fought for control of Europe were the feudal lords, including various monarchs and nobility, and the emerging centralized powers, such as the papacy and later nation-states. Feudal lords vied for land and influence, while the Church sought to assert its authority over spiritual and temporal matters. Additionally, conflicts often arose between rival kingdoms and principalities, as well as between different ethnic and cultural groups, notably during the Crusades and the Hundred Years' War. This struggle for power shaped the political landscape of Europe throughout the medieval period.
manor
I don't know I need similarities not differences.
One key difference between feudal Europe and feudal Japan lies in their social hierarchies and roles within the class structure. In Europe, the feudal system was characterized by a rigid class structure with kings, nobles, knights, and peasants, while in Japan, the system was more focused on the samurai warrior class, who held significant power and loyalty to their daimyo (feudal lords). Additionally, the cultural and religious influences, such as the prominence of Christianity in Europe versus Shinto and Buddhism in Japan, shaped their respective societies and governance.
Europe and Japan were both feudal societies. Feudal systems contain hierarchies. The hierarchies in Japan and Europe were similar: king/emperor on the top, nobles next, then knights/samurai, then merchants and craftsmen, and lastly, peasants and serfs.
because
the relations between landowners and serfs varied from refion to region
It was the government of Europe for a 1,000 years.
It eliminated the feudal system in Europe. Which gave increased power to the king.
The strengthening of the feudal system
Feudal lords.
Europe
because they had the same feudal systems at the same time
peasant or serf