The immediate cause of the revival of human rights in post-Sccond World War period was

The revival and institutionalization of human rights in the post-Second World War period were primarily driven by the global shock following the revelation of Nazi atrocities. While the war saw massive loss of life [t1][c5] and the use of atomic weapons [c1][c2], it was the 'Nazi criminality' and the industrialized scale of the Holocaust that necessitated a new international moral and legal framework [c4][t2]. The discovery of the concentration camps and the systematic genocide of Jews led directly to the Nuremberg Trials and the subsequent drafting of the Universal Declaration of Human Rights (1948) to ensure such 'mass human rights violations' would never be repeated [t2]. This shift moved human rights from the domestic sphere to a matter of international concern, as the world grappled with the 'unimaginable' nature of the Holocaust [t6][t7].

Sources

1. [1] India and the Contemporary World - I. History-Class IX . NCERT(Revised ed 2025) > Chapter 3: Nazism and the Rise of Hitler > 2.2 Reconstruction > p. 60
2. [2] https://livrepository.liverpool.ac.uk/3007578/1/200351794_Sep2016.pdf
3. [3] India and the Contemporary World – II. History-Class X . NCERT(Revised ed 2025) > Chapter 3: The Making of a Global World > 4 Rebuilding a World Economy: The Post-war Era > p. 74
4. [4] History , class XII (Tamilnadu state board 2024 ed.) > Chapter 14: Outbreak of World War II and its Impact in Colonies > Atomic Bomb attack on Japan > p. 227
5. [5] Themes in world history, History Class XI (NCERT 2025 ed.) > Chapter 7: Paths to Modernisation > After Defeat: Re-emerging as a Global Economic Power > p. 164