The Secretary-General who succeeded Dag Hammarskjoild was

The Secretary-General who succeeded Dag Hammarskjold was U. Thant. He was a diplomat from Myanmar (formerly Burma) and served as Secretary-General from 1961 to 1971. Thant took over the role of Secretary-General after Hammarskjold's untimely death in a plane crash in 1961, and he faced many challenges during his tenure, including the Cuban Missile Crisis and the Vietnam War. Despite these challenges, Thant worked hard to promote peace and cooperation between nations, and he was instrumental in negotiating a peaceful resolution to the Cuban Missile Crisis. He was also a strong advocate for disarmament and worked to promote the peaceful uses of nuclear energy. Thant was the first Secretary-General from Asia, and he played a crucial role in shaping the United Nations during a time of great global change and turmoil.