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
Kasama, Zambia Codrington established a boma at Kasama and the town's central location as well as its closeness to Chitimukulu's court led to it eventually becoming the largest and dominant town of the north-eastern lobe of what became Northern Rhodesia, then later, Zambia. The town has a few modern facilities, among them are a Shoprite Checkers branch, budget stores, a local supermarket called PJT and four bakeries. The town has branches of Zambian commercial banks including Zambia National Commercial Bank, National Savings & Credit Bank, Atlas Mara Bank Zambia Limited, Standard Chartered Zambia, Cavmont Bank, Barclays Bank of Zambia and Indo-Zambia Bank