What is the official language of the host city for the Commonwealth Heads of Government Meeting in 1979?
Commonwealth Heads of Government Meeting 1979:  It was held in Lusaka, Zambia, between 1 August 1979 and 7 August 1979, and was hosted by that country's President, Kenneth Kaunda. Lusaka:  English is the official language of the city, but Nyanja and Bemba are also common.
English