Step 1: Differentiating Genesis from Formalization:
While the concept of Afro-Asian unity was ideologically synthesized at the Bandung Conference in 1955, the Non-Aligned Movement (NAM) was not formally institutionalized as an active diplomatic bloc at that time. The Bandung Conference served as the programmatic precursor, laying down the structural principles of peaceful coexistence.
Step 2: The Belgrade Summit of 1961:
The Non-Aligned Movement became a formalized, sovereign diplomatic coalition at the First Summit of Non-Aligned Heads of State or Government, held in Belgrade, Yugoslavia, in September 1961. Spearheaded by Josip Broz Tito, Jawaharlal Nehru, Gamal Abdel Nasser, Kwame Nkrumah, and Sukarno, this summit marked the official transformation of Afro-Asian unity into a structured global platform.
Step 3: Evaluating the Options:
The institutional birth of NAM took place in Belgrade in 1961. Therefore, option (C) is the only factually correct choice.