 Such improvements led to an increase in Accra's population due to the migration of rural dwellers into the city, and the immigration of increasing numbers of British businessmen and administrators.In the years following World War II, the neighbourhoods of Ridge and Cantonments were planned as low-density developments for Europeans, while many rural migrants settled in neighbourhoods which had not yet been incorporated into Accra's municipal boundary, such as Nima and surrounding areas.Thus, the development of these neighbourhoods was unregulated by the government, creating a crowded and jumbled shanty-town landscape.