Core-periphery models are generally based on the idea thatResponsesall world regions are equally well developedall world regions are equally well developedlevels of social and economic development are fairly uniform between core areas and peripheral areaslevels of social and economic development are fairly uniform between core areas and peripheral areassharp spatial contrasts in social and economic development exist between economic heart­lands and outlying subordinate areassharp spatial contrasts in social and economic development exist between economic heart­lands and outlying subordinate areasthe growth and prosperity of core countries has not been achieved at the expense of peripheral countriesthe growth and prosperity of core countries has not been achieved at the expense of peripheral countriesthe economic and social heart of a territory should be at its geographic center

The core-periphery model is generally based on the idea that sharp spatial contrasts in social and economic development exist between economic heartlands and outlying subordinate areas. This model suggests that the world is divided into two regions: the core, which is characterized by high levels of development, and the periphery, which is characterized by lower levels of development.

The core regions are typically more developed because they have access to resources, technology, and wealth. They are often the economic, political, and cultural centers of a country or region.

On the other hand, the periphery regions are less developed and often rely on the core for economic support. They typically have less access to resources, technology, and wealth, and are often exploited by the core for these things.

This model also suggests that the growth and prosperity of core countries has often been achieved at the expense of peripheral countries. This is because the core often exploits the resources and labor of the periphery to fuel its own development.

However, it's important to note that the core-periphery model is a simplification of reality and doesn't account for all the complexities of global development. For example, it doesn't consider the existence of semi-peripheral regions, which have characteristics of both core and peripheral regions.

In conclusion, the core-periphery model is based on the idea that there are sharp contrasts in social and economic development between core and peripheral regions, and that the prosperity of the core often comes at the expense of the periphery.