In every country there are natural resources to be used, and because of that, they have to be controled. In a communistic society nearly all natural resources are controled by the governemt. All except things like wind and sun.
In a mixed economy like ours, there are lots of resources that are controled by the government, but most of these resources are controled by the land that is owned. The government may control oil simply because it owns the land its on. Other resources are controled by private companies.