United Nations (UN) meaning: An international organization that aims at facilitating cooperation in international law, human rights, social progress, international security, and accomplishment of world peace. The United Nations was founded in 1945 after World War II. The main purpose of forming the United Nations was to stop wars between countries and prepare the ground where all of these could talk. The headquarters of the United Nations in New York. There are various languages included by the United Nations, including French, English, Spanish and Chinese. There are five main bodies on which the Union Nations work: the General Assembly, the Security Council, the Economic and Social Council, the UN Secretary-General, and the International Court of Justice.