21stcentury 946 agriculture australia china citiesandtowns cityandtownlife cityplanning congresses conservatism countrylife cultureconflict developingcountries economicaspects economicconditions economicdevelopment europe foodsecurity groupvalues(sociology) growth history india industries kāsganj landuse medieval mexico nepal oregon politicalculture politicsandculture politicsandgovernment population rural rural-urbanmigration ruralconditions ruraldevelopment ruralpopulation smallcities socialconditions sociologicalaspects sociology spain to1500 unitedstates urban urbanecology(sociology) urbanization urbanpolicy wildland-urbaninterface