Original sentence: Capitalism, the dominant economic system since feudalism and mercantilism has been defined in different ways: These definitions of capitalism describe a system composed of some combination of the following statements, some contradictory:  the right of individuals to own, and trade private property including capital goods; the right of groups of individuals to act as a corporation with distinct legal personality and responsibility; a free or relatively free market where price is determined by supply and demand; investment for profit with the risk of loss of the investment; investment decisions are made privately; competition for this profit; the value of labour is determined by the market; the role of government is limited mostly to protecting economic liberty and private property; peaceful, voluntary exchange which is fully realized only without a state.Marxism claims that capitalism leads to the exploitation of the labourers, and is thus opposed to it
Edited sentence: Capitalism has been defined in different, sometimes competing, ways.These definitions of capitalism describe a system composed of some combination of the following statements, some contradictory: economic system dominant in the Western world and following feudalism; today not present in a pure form but only partially in the current "mixed economy"; the right of individuals to own, and trade private property including capital goods; the right of groups of individuals to act as a corporation with distinct legal personality and responsibility; a free or relatively free market where price is determined by supply and demand; investment for profit with the risk of loss of the investment; investment decisions are made privately; competition for this profit; in marxist theory, exploitation of workers by the owners of capital; the role of government is limited mostly to protecting economic liberty and private property; peaceful, voluntary exchange which is fully realized only without a state