Ans: Historical Background of United Nations:
After the First World War, the League of Nations was established in 1919.
This organisation lost its usefulness when the Second World War began. In
order to put a stop to future wars, the heads of states of the big countries
held many meetings. At last, a conference was held in 1945 in San
Francisco, America, and it was decided to create the United Nations. The
representatives of 50 states approved the charter of United Nations on 25th
June 1945. This organisation came into being on 24th October, 1945.