Northern Rhodesia had been detained without trial, following claims that they had planned the indiscriminate killing of Europeans and Asians, and of African opponents, the so-called "murder plot". Shortly afterwards, on 12 March 1959, the governor of Northern Rhodesia also declared a State of emergency there, arrested 45 Zambia African National Congress including Kaunda and banned the party. Kaunda later received a 19-month prison sentence for conspiracy, although no credible evidence of conspiracy was produced. The declaration of States of emergency in both Northern Rhodesia and Nyasaland marked the end of attempts by their nationalist parties to work within the colonial system,
Northern Rhodesia the authorities considered seditious. They were not generally politically active, but the Watchtower movement was supposedly involved in the 1935 Copperbelt riots, probably incorrectly. Secondly, Africans educated by missions or abroad sought social, economic and political advancement through voluntary associations, often called "Welfare Associations". Their protests were muted until the early 1930s, and concentrated on improving African education and agriculture, with political representation a distant aspiration. However, several of the Welfare Associations on the Copperbelt were involved in the 1935 disturbances. Hut tax was gradually introduced to different areas of Northern Rhodesia between 1901 and 1913. Its introduction generally caused