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
Zambia the world's fastest economically reformed countries. The Common Market for Eastern and Southern Africa (COMESA) is headquartered in Lusaka. The territory of what is now Zambia was known as Northern Rhodesia from 1911. It was renamed Zambia at independence in 1964. The new name of Zambia was derived from the Zambezi river (Zambezi may mean "Grand River"). The area of modern Zambia is known to have been inhabited by the Khoisan until around AD 300, when migrating Bantu began to settle around these areas. These early hunter-gatherer groups were later either annihilated or absorbed by subsequent more organised Bantu groups.