How did nelson Mandela fight for black right while in jail?

While in prison, Nelson Mandela continued to fight for black rights by becoming a symbol of resistance against apartheid. He used his time to strengthen the African National Congress (ANC) and articulate the struggle for freedom through letters and discussions with fellow inmates and guards. Mandela's resilience and leadership helped to galvanize international support for the anti-apartheid movement, turning his imprisonment into a powerful symbol of the fight for justice in South Africa. Additionally, he engaged in negotiations with the apartheid government, laying the groundwork for future reforms.