Original sentence: In 1965, Ian Smith's Rhodesian Front party took over the government when it unilaterally declared independence.The Smith administration said the traditional chiefs were the legitimate voice of the black Shona and Ndebele population and that the nationalists were dangerous usurpers.They were unwilling to compromise on most political, economic and social inequalities
Edited sentence: Additionally the evolution to majority rule was written into every constitution, every amendment to it, and the UDI constitution, but this was unrecognised due to a hostile propaganda campaign against Rhodesia.After becoming fed up with "perfidious albion" attitude of the British Government it unilaterally declared independence.In 1965, Ian Smith's Rhodesian Front party took over the government, and attempted to negotiate independence with the British government, which it had been both promised formally and informally since 1945; however the British government dodged this at every turn and accused the Rhodesian government of being unrepresentative of the population when in fact this was untrue as it had a  very fair and democratic political and electoral system.The Smith administration said the traditional chiefs were the legitimate voice of the black Shona and Ndebele population and that the nationalists were dangerous usurpers due to their extremist methods of intimidations by terrorising the black population to change their votes in elections.They were willing to compromise on most political, economic and social inequalities in every negotiation and meeting they were involved with but it was always the nationalists that caused disruptions and breakdowns of these meetings