Intro -- The United Nations -- Key information -- Introduction -- Political, social and economic context -- The League of Nations (1919-1946): the forerunner of the United Nations -- The interwar period, or the failure of peace -- The Second World War and the desire for a new organisation -- Biography -- Franklin D. Roosevelt, American president -- The creation of the United Nations -- From plan to reality -- The Charter of the United Nations -- Impact -- International peace and security -- Disarmament and nuclear control -- Support for economic wellbeing and cooperation -- Support for social wellbeing and cooperation -- A world without the UN -- Summary -- Find out more.