What is feudalism?

Feudalism was a set of legal and military customs in medieval Europe that flourished between the 9th and 15th centuries, which, broadly defined, was a system for ordering society around relationships derived from the holding of land in exchange for service or labour.

Although derived from the Latin word feodum (fief),[1] then in use, the term feudalism and the system it describes were not conceived of as a formal political system by the people living in the medieval period. In its classic definition, by François-Louis Ganshof (1944),[2] feudalism describes a set of reciprocal legal and military obligations among the warrior nobility, revolving around the three key concepts of lords, vassals, and fiefs.[2]

Europe:

In the European "feudal" system, the king awarded land grants or "fiefs" to his most important nobles, his barons, and his bishops, in return for their contribution of soldiers for the king's armies. At the lowest echelon of society were the peasants, also called "serfs" or "villeins." In exchange for living and working on his land, known as the "demesne," the lord offered his peasants protection.

Japan:

Unlike European feudal society, in which the peasants (or serfs) were at the bottom, the Japanese feudal class structure placed merchants on the lowest rung. Confucian ideals emphasized the importance of productive members of society, so farmers and fishermen had higher status than shop-keepers in Japan.

At the top of the heap was the samurai class.