This document compares and contrasts the basic principles and characteristics of capitalism, socialism, and communism. Capitalism involves private property ownership and free market competition. Socialism incorporates both private and public property ownership as well as a regulated market. Communism entails public property ownership, centralized government control of the economy, and an absence of competition. The document outlines key differences in terms of ownership, operation, choice, government involvement, competition, and prominent historical supporters of each economic system.