Directions: Read the following passage and answer the question hat follows:

Nelson Mandela is one of the great moral and political leaders of our time. An international hero, whose lifelong dedication to fight against racial oppression in South Africa won him the Noble Peace Prize and the Presidency of his country. Since his triumphant release in 1990 from more than a quarter-century of imprisonment, Mandela has been at the centre of the most compelling and inspiring political drama in the world. He is revered everywhere as a vital force in the fight for human rights and racial equality.

The antonym of the word 'oppression', as used in the passage above, is