Why do States like Arizona have less potholes than New York?

Because New York has way more sewer system's. In 1849, following a series of deadly cholera outbreaks, the city started building sewers. New York laid 70 miles of sewers between 1850 and 1855. It then expanded the sewer network throughout the city as it grew.

Explanation:

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.