The term denotes the condition wherein agricultural production exceeds the needs of the society producing it. This excess output allows for the accumulation of reserves beyond immediate consumption requirements. As an illustration, a community growing substantially more grain than it requires for sustenance, with the remaining portion stored or traded, exemplifies this concept.
The presence of such excess yields numerous advantages, fostering societal development and specialization. It facilitates the support of non-agricultural populations, like artisans, merchants, and governing bodies, enabling the rise of complex civilizations. Historically, its emergence has correlated with population growth, urbanization, and the development of trade networks.