Theories of imperialism
Amin

Samir Amin 's main contributions to the study of imperialism are his theories of "accumulation on a world scale" and of "unequal development." To Amin, the process of accumulation must be understood on a world scale, but in a world divided into distinct national social formations. The process of accumulation tends to exacerbate inequalities between these social formations, whereupon they become divided into a core and periphery. Accumulation within the center tends to be "autocentric," or governed by its own internal dynamic as dictated by local conditions, prices, and effective demand, in a manner relatively unchanged since it was first described by Marx. Accumulation in the periphery, on the other hand, is "extraverted," meaning that it is conducted in a manner beneficial to core countries, dictated by their need for goods and raw materials. This extraverted accumulation results in export specialization, with a large proportion of developing economies devoted to producing goods to suit foreign demand.
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