Mau Mau Uprising 1952, the poisonous latex of the African milk bush was used by members of Mau Mau to kill cattle in an incident of biological warfare. Although Mau Mau was effectively crushed by the end of 1956, it was not until the First Lancaster House Conference, in January 1960, that native Kenyan majority rule was established and the period of colonial transition to independence initiated. Before the conference, it was anticipated by both native Kenyan and European leaders that Kenya was set for a European-dominated multi-racial government. There is continuing debate about Mau Mau's and the rebellion's effects on decolonisation and
Operation Anvil (Mau Mau Uprising) Mau" movement, had proliferated the Kikuyuland region. On 20 October the colonial governor declared a state of emergency, initiating efforts by the British military to put down the insurgency. The first months of the British campaign were plagued by a lack of discipline, communication, coherent strategy, and useful intelligence and little progress was made against the Mau Mau. An assault on the Naivasha police station and a massacre of civilians in the village of Lari in March 1953 dramatically escalated the conflict. Mau Mau activity also began to surface in the city of Nairobi, which had a large Kikuyu population.