January 10, 1920
The League of Nations formally came into being when the Covenant of the League of Nations, ratified by 42 nations in 1919, took effect.
January 10, 1946
The first General Assembly of the United Nations, comprising 51 nations, convened at Westminster Central Hall in London, England. On January 24, the General Assembly adopted its first resolution, a measure calling for the peaceful uses of atomic energy and the elimination of atomic and other weapons of mass destruction.
