described in 1972 an Africa that had been consciously exploited by European imperialists, leading directly to the modern underdevelopment of most of the continent.

The theory was popular in the 1960s and 1970s as a criticism of modernization theory, which was falling increasingly out of favor because of continued widespread poverty in much of the world. At that time the assumptions of liberal theories of development were under attack. It was used to explain the causes of overurbanization, a theory