Zambia Urban dwellers sometimes differentiate between urban and rural dialects of the same language by prefixing the rural languages with 'deep'. Most will thus speak Bemba and Nyanja in the Copperbelt; Nyanja is dominantly spoken in Lusaka and Eastern Zambia. English is used in official communications and is the language of choice at home among – now common – intertribal families. This continuous evolution of languages has led to Zambian slang which can be heard in daily life throughout Lusaka and other major cities. Portuguese has been introduced into the school curriculum due to the presence of a large Portuguese-speaking Angolan
Livingstone, Zambia non-black property, especially those of whites. Consequently, most of the remaining Northern Rhodesians left after an official policy of nationalisation in Zambia was announced. Some colonial civic buildings were destroyed and replaced with an African architecture, although Livingstone was used as a location for a 1950s Rhodesian town in the 1981 movie "The Grass is Singing" (based on the Doris Lessing novel of that name). . At the same time, a large infusion of cash from the British government to Zambia at independence was partially used in Livingstone. Livingstone suffered economic decline in the 1970s due in part to renationalisation