Seth Dixon‘s insight:

In 2011, one of the AP Human Geography Free Response Questions focused on identifying if the rank-size rule applied the urban hierarchy of a country (Mexico), or if a primate city dominated the network of metropolitan regions.  To prepare people to understand the rubric, I put together this presentation, based primarily on my time researching in Mexico City (download the PPT file).  The problems with primate cities are hardly unique to Mexico City; this additional BBC article bemoans Britain’s lack of a true second city, arguing that London’s shadow looms too large for sustained national development outside of the primate city. 

Tags: APHG, urbanunit 7 cities, megacities.

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