Complex sentence: Muyongo fled the country with Chief Boniface Mamili of the Lozi allied Fwe people, the former governor of the Caprivi Region (today Zambezi Region), John Mabuku.
Split into simpler sentences: Muyongo fled the country with Chief Boniface Mamili of the Lozi allied Fwe people. Other Caprivians, including the former governor of the Caprivi Region (today Zambezi Region), John Mabuku.