feudalism

Feudalism structured medieval European society around obligations between lords and their vassals.封建制度围绕领主与封臣之间的义务构建了中世纪的欧洲社会。

The decline of feudalism accelerated following the devastation of the Black Death in the fourteenth century.随着十四世纪黑死病的肆虐，封建制度的衰落加速了。