Moise Tshombe
In 1960, after the Democratic Republic of the Congo (then called Republic of the Congo) gained independence from Belgium, the UMHK, Moise Tshombe and Godefroid Munongo supported the secession of Katanga province from the Congo. This was supported by Belgium but opposed by the Congolese Prime Minister Patrice Lumumba. This led to the assassination of Lumumba and the Katanga Crisis (or "Congo Crisis"), which lasted from 1960 to 1965. The breakaway State of Katanga existed from 1960 to 1963.