On the sources of the world system analysis

Wallerstein defines the world-systems analysis in fact as a historical-social discipline developed after the World War II. But actually the capitalism theory elaborated by Marx and Engels was unquestionable a “world-systems” theory, which can be proven by many citations. They even studied the consequences of the surviving pre-capitalist relations. Nevertheless, the role of the world-systems analysis should be highlighted in understanding the present global capitalism as a unified system.