The secession of Katanga was crushed and Katanga was re-united to the Congo.
It contributed to the realisation of the OAU in 1963 to defend the territorial integrity of African territories, to fight against neo colonialism etc because of the attitude of the Belgians towards independent Congo.
The crisis deepened the rivalry among the politicians.
It provided African peace keeping military officers experience.
it led to the execution of the Congolese prime minster ,Lumumba in January 1961
It led to the death of the UN secretary General Dag Hammarksjold in September 1961 with the complicity of the Soviet intelligence, to revenge the death of Lumumba.
Economic
It led to the destruction of farm lands, which led to shortage of food and increase in food prices.
It disrupted work on the copper mines in Katanga causing a decline in revenue
The crisis caused heavy destruction on transport infrastructures especially bridges, railways and roads.
The crisis caused bankruptcy in the UNO, because some members refused to contribute to thr UN special fund, especially france, belgium, USSR etc.