Zambia main local language, especially in Lusaka, is Nyanja (Chewa), followed by Bemba. In the Copperbelt Bemba is the main language and Nyanja second. Bemba and Nyanja are spoken in the urban areas in addition to other indigenous languages which are commonly spoken in Zambia. These include Lozi, Kaonde, Tonga, Lunda and Luvale, which feature on the Zambia National Broadcasting Corporation (ZNBC)'s local languages section. The total number of languages spoken in Zambia is 73. The process of urbanisation has had a dramatic effect on some of the indigenous languages, including the assimilation of words from other indigenous languages and English.
Swahili language for those areas, and the standard orthography for Swahili was adopted. Swahili has become a second language spoken by tens of millions in three African Great Lakes countries (Tanzania, Kenya, and the DRC) where it is an official or national language. In 2016, Swahili was made a compulsory subject in all Kenyan schools. Swahili and closely related languages are spoken by relatively small numbers of people in Burundi, Comoros, Malawi, Mozambique, Uganda, Zambia and Rwanda. The language was still understood in the southern ports of the Red Sea in the 20th century. Some 80 percent of approximately 49 million Tanzanians