architect of a model of economic development at national level. He suggested 4 stages:
initially a country contains several relatively similar and independent settlement centres (pre-industrial stage)
an advantage leads to one centre becoming the core region through cumulative causation. The rest of the country is left as periphery (transitional stage)
some of the peripheral centres begin to develop into sub-cores due to greater connections between centres and diffusion of growth associated with increasing costs in the core (industrial stage)
a multi-core, interdependent network of urban areas is linked across the national area by highly efficient communication links (post-industrial stage).
Geography Dictionary & Glossary for Students \\ ITS Tutorial School (ITS) - Hong Kong.