Which system of government rests furthest left on the political spectrum and, as a totalitarian regime, focuses on the government owning all aspects of the economy, including property and the means of production?

Let us know what you decide:

http://dictionary.reference.com/browse/communism

http://dictionary.reference.com/browse/socialism?s=t

http://dictionary.reference.com/browse/marxism?s=t

http://dictionary.reference.com/browse/fascism?s=t

http://dictionary.reference.com/browse/oligarchy?s=t

http://dictionary.reference.com/browse/democracy?s=t

http://dictionary.reference.com/browse/republic?s=t