Answer
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Christaller's central place theory influenced the planning of new cities in countries with unsettled lands by proposing a systematic way to organize settlements and services in a hierarchical pattern. This theory helped in establishing efficient distribution systems and optimizing the arrangement of services to cater to different population densities.
The smallest central places lost their reason for existence and disappeared in different parts of North America due to changes in transportation and communication technologies. As larger cities and urban centers developed, the smaller settlements could not compete economically, leading to their decline and eventual disappearance.
