On 12th June 1941, the Allies signed the mutual memorandum which emphasised "the co-operation with the other independent free nations" This memorandum was the first step towards the establishment of the United Nations.
The establishment of United Nations was officially declared on 24th October 1945 and the charter became effective after being approved by the five countries, who are the permanent members of the Security Council and other member countries.
The United Nations had been established to achieve the stability of international relations and provide peace with the basic elements of stability and security in addition to participating in a wide range of activities that affect the different aspects of the human life all over the world.