Editing Zoning (section)

====Scale====
Early zoning practices were subtle and often debated. Some claim the practices started in the 1920s<ref name="Rothwell2010">Rothwell, Jonathan T. and Massey, Douglas S. (2010) "Density Zoning and Class Segregation in U.S. Metropolitan Areas" Social Science Quarterly. Volume 91, Issue 5, pp.1123-1141</ref> while others suggest the birth of zoning occurred in New York in 1916.<ref>Natoli, Salvatore J. (1971) "Zoning and the Development of Urban Land Use Patterns" Economic Geography. Volume 47, Number 2, pp. 171-184</ref> Both of these examples for the start of zoning, however, were urban cases. Zoning becomes an increasing legal force as it continues to expand in its geographical range through its introduction in other urban centres and use in larger political and geographical boundaries. Regional zoning was the next step in increased geographical size of areas under zoning laws.<ref name="Whitnall">Whitnall, Gordon (1931) "History of Zoning" Annals of the American Academy of Political and Social Science. Volume 155, Part 2, pp.1-14</ref> A major difference between urban zoning and regional zoning was that "regional areas consequently seldom bear direct relationship to arbitrary political boundaries".<ref name="Whitnall" /> This form of zoning also included rural areas which was counter-intuitive to the theory that zoning was a result of population density.<ref name="Whitnall" /> Finally, zoning also expanded again but back to a political boundary again with state zoning.<ref name="Whitnall" />