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It would be a "traditional" type of economic system that relies primarily on hunting gathering herding and farming to maintain self sufficiency, since this was how humans sustained life for many years before the modern era.
The transition to collectivization in the former Soviet Union caused widespread starvation, because there was a sudden disruption of production which happened because of collective farming and the mass seizure of property. Many of the land had become infertile, because of recent industrial developments and since it was a forced collectivization and completely controlled by the government, the people would receive as much money as they would produce. Of course this was impossible if their land was not fertile.