The economic basis of feudalism is agriculture. Feudalism was a social and economic system that emerged in medieval Europe in which land was the primary source of wealth and power. The feudal system was based on a hierarchy of lords and vassals who controlled and managed the land and its resources. The lords were the owners of the land, while the vassals were granted the use of the land in exchange for military and other services. Agriculture was the primary economic activity in feudal society, and the production of food and other crops was essential for the survival and prosperity of the feudal system. The peasants, who worked the land, were the backbone of the feudal economy, and their labor was essential for the production of food and other goods. The feudal system was characterized by a lack of social and economic mobility, with individuals being born into their respective social classes and unable to move up the social ladder. Therefore, agriculture was the foundation of the feudal economy, and the feudal system was built around the ownership and control of the land.