Kalonji, however, split with Lumumba to form a federalist faction of the party, known as the Mouvement National Congolais-Kalonji (MNC-K), which failed to achieve significant success while Lumumba was made Prime Minister of the independent Congo in 1960.
Kalonji, however, diverged from Lumumba to create a federalist faction of the party, known as the Mouvement National Congolais-Kalonji (MNC-K), which ultimately failed to gain substantial traction while Lumumba was appointed Prime Minister of independent Congo in 1960.