The economic basis of feudalism is agriculture. Feudalism was a social and political system that existed in Europe from the 9th to the 15th centuries. In this system, lords owned the land and provided protection to the peasants who worked on their lands. The lords and the peasants had a reciprocal relationship, with the lords granting the peasants the use of the land in exchange for their labor and loyalty. The vast majority of the population was involved in agriculture, producing food and other goods for the local community. This agricultural economy formed the basis of the feudal system, as it provided the means of subsistence for both lords and peasants. The lords used their control over the land and the peasants to maintain their power and wealth, while the peasants relied on the lords for protection and support. This relationship was the foundation of feudal society, and it shaped the economic, political, and social structures of Europe for many centuries.