good or service.
*Range is the maximum distance consumers are prepared to travel to acquire goods -- at some point the cost or inconvenience will outweigh the need for the good.

The result of these consumer preferences is that a system of centres of various sizes will emerge. Each centre will supply particular types of goods forming levels of hierarchy. In the functional hierarchies, generalisations can be made regarding the spacing, size and function of settlements.

#The larger the settlements are in size, the fewer in

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