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In page Soweto uprising:

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For the government, the uprising marked the most fundamental challenge yet to apartheid. The economic and political instability that it caused was heightened by the strengthening international boycott. It would be 14 years before Nelson Mandela was released, but the state could never restore the relative peace and social stability of the early 1970s, as black resistance grew. The liberation movements that were either weakened or exiled gained new momentum as a surge of recruits joined.[citation needed]