20thcentury 21stcentury agriculture agricultureandstate cityplanning economicaspects europeanunioncountries globalization greatbritain institutionbuilding intergovernmentalcooperation internationalcooperation internetgovernance interorganizationalrelations lobbying networkanalysis northernireland policysciences politicalplanning politicsandgovernment pressuregroups regionalplanning socialaspects socialnetworks socialsciences sociology unitedstates urban worldpolitics