Which of the following was a common tradition in feudal society?

In feudal society, land ownership concentrated in a few hands was a defining characteristic. The system was structured around the relationships between lords and vassals, where powerful lords would control large estates and grant portions of their land to vassals in exchange for military service and loyalty. This hierarchical structure created a society where a small number of landowners held significant power and wealth, while the majority, including peasants and serfs, worked the land without owning it themselves. This concentration of land ownership not only fostered social stratification but also established the basis for the economic and political systems of the Middle Ages, reinforcing the feudal bonds of loyalty and obligation throughout the society.