The one-time president of the United Nations General Assembly was
Answer Details
The one-time president of the United Nations General Assembly was Joseph Garba.
Joseph Garba was a Nigerian diplomat and military officer who served as the president of the United Nations General Assembly from 1989 to 1990. As the president of the General Assembly, he presided over meetings of the UN and played a key role in promoting international cooperation and addressing global issues.
While Ibrahim Gambari, Arthur Mbanefo, and Maitama Sule are all notable figures in Nigerian history and international diplomacy, none of them served as the president of the United Nations General Assembly.