Industrial society makes urbanization desirable, in part so that workers can be closer to centers of production, and the service industry can provide labor to workers and those that benefit financially from them, in exchange for a piece of production profits with which they can buy goods. This leads to the rise of very large cities and surrounding suburban areas with a high rate of economic activity.
These urban centers require the input of external energy sources in order to overcome the diminishing returns of agricultural consolidation, due partially to the lack of nearby arable land, associated transportation and storage costs, and are otherwise unsustainable. This makes the reliable availability of the needed energy resources high priority in industrial government policies.
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